chapter 8 Up a tree
vocabulary(U7)
1.assume v.
def:1.to think that something is true or probably true without knowing that it is true
2.to begin (a role, duty, etc.) as a job or responsibility
3.to begin to have (a particular appearance or quality)
synonym:suppose,think
Ex:I think we can safely assume that he's coming. = I think it's safe to assume that he's coming.
2.diameter n.
def:1.a straight line from one side of something (such as a circle) to the other side
that passes through the center point
2.the distance through the center of something from one side to the other
Ex:The dotted line indicates the diameter of the circle.
3.ecosystem n.
def:1.everything that exists in a particular environment.
Ex:Many animals live in the forest ecosystem.
4.emerge v.
def:1.to become known or apparent
2.to rise or appear from a hidden or unknown place or condition : to come out into view
3.used to indicate the usually good state or condition of someone or something
at the end of an event, process, etc.
synonym:pop up, spring up
Ex:The cat emerged from its hiding place behind the couch.
5.frontier n.
def:1.a border between two countries
2.a distant area where few people live
3.the limits of knowledge in a particular field
synonym:border,line,area
Ex:They were sent on an expedition to explore the western frontier.
6.giant adj./n.
def:1.very large : much larger or more powerful than normal
synonym:account,acquisition
Ex:The company has become a giant of the automotive industry.
7.limb n.
def:1.a leg or arm
2.a large branch of a tree
Ex:They tied a rope to one of the limbs of the maple tree.
8.manage to phr.
def:1. to succeed in doing something, especially something that needs a lot of effort or skill
Ex:I managed to escape by diving into the river.9.penetrate v.
def:1.to go through or into something
2.to see or show the way through (something)
3.to succeed in becoming part of (an organization, a community, etc.)
synonym:push,cross,cut across
Ex:These bullets can penetrate armor.
10.rot v.
def:1.to slowly decay or cause (something) to decay
2.the process of rotting or the condition that results when something rots
synonym:decay
Ex:The wood had rotted away.
vocabulary(U8)
1.alert v.
def:1.able to think clearly and to notice things
2.something (such as a message or loud sound)
that tells people there is some danger or problem : an alarm or signal of danger
synonym:lucid,be clear that
Ex:They sounded an alert when enemy planes were approaching the city.
2.bush n.
def:1. plant that has stems of wood and is smaller than a tree
2.a thick growth of hair or fur
Ex:The bushes [=shrubs] in my yard need to be trimmed.
3.cylinder n.
def:1.a shape that has straight sides and two circular ends
2.something that is shaped like a cylinder
Ex:The economy is running on all cylinders.
def:1.very sad and upset because of having little or no hope : feeling or showing despair
2.very bad or difficult to deal with
3.done with all of your strength or energy and with little hope of succeeding
4.having a strong need or desire for something or to do something
5.very severe or strong
synonym:nervous,upset
Ex:They desperately struggled to defeat the enemy.
5.foliage n.
def:the leaves of a plant or of many plants
Ex:It's a tree with pretty foliage.
6.gap n.
def:1.a space between two people or things
2.a missing part
3.a part or period in which nothing happens
Ex:The child had a gap between her two front teeth.
7.grab v.
def:1.to quickly take and hold (someone or something) with your hand or arms
2.to take or get (something) in a quick and informal way
synonym:carry on, hold on, hang on,
Ex:I have to go back in the house and grab my car keys.
8.gravity n.
def:1.a very serious quality or condition : the condition of being grave or serious
2.the natural force that tends to cause physical things to move towards each other
: the force that causes things to fall towards the Earth
Ex:They didn't seem to understand the gravity [=seriousness] of the situation.
9.layer n./v.
def:1.an amount of something that is spread over an area
2.a covering piece of material or a part that lies over or under another
3.a bird that lays eggs
4.a worker who lays something (such as bricks)
Ex:Everything was covered by a thin layer of sand/dust.
10.lean v./adj.
def:1.to bend or move from a straight position
2.to rest on or against something or someone for support
3.used to describe what someone wants to do, tends to do, or is likely to do
synonym:bend,bestride
Ex:The tree leans to one side.
11.leap v.
def:1.to jump from a surface
2.to move quickly
3.to suddenly increase by a large amount
synonym:jump,bound
Ex:The price of gasoline leaped (by) 10 percent.
12.shrug v.
def:1.to raise and lower your shoulders usually to show that you do not know or care about something
Ex:I asked if he wanted to go out to dinner, and he just shrugged.
13.swing v./n./adj.
def:1.to move backward and forward or from side to side while hanging from something
2.to move (your arm, a tool, etc.) with a quick, curving motion especially to try to hit something
3.to move back and forth on a special type of seat (called a swing)
synonym:bounce
Ex:The clock's pendulum stopped swinging.
14.tangle v./n.
def:1.to become or cause (something) to become twisted together
2.a twisted knot of hair, thread, etc
synonym:crisis,battle,nightmare,mess,chaos
Ex:Her foot was tangled (up) in the cord.
15.work (one's) way phr.
def:to move yourself into or out of a particular position slowly or with difficulty
Ex:The prisoner somehow worked his way out of the handcuffs.
沒有留言:
張貼留言