四个角 4 - 第 12 单元 A 课

to randomly discover someone or something, particularly in a way that is surprising or unexpected

找到

a way in which a problem can be solved or dealt with

解决方案

relating to the natural world and effects of human actions on it

环境的

a subject of significance or interest to someone or something

关注

to not let someone to do something

防止

a change in water, air, etc. that makes it harmful or dangerous

污染

toxic and harmful substances in the air that can cause illnesses

空气污染

to join together in pursuit of a shared goal or advantage

结合

to regularly travel to one's place of work and home by different means

通勤

to keep a vehicle, building, road, etc. in good condition by doing regular repairs, renovations, or examinations

维护

to not get involved with someone or something

避免

to keep something in a particular place for later use, typically in a systematic or organized manner

存储

to not let something increase in amount or number

限制

to get rid of something that is no longer needed

丢弃

to keep something from change or harm

保护

to get goods or services in exchange for money or other forms of payment

购买

to make a waste product usable again

回收利用

to be able to say who or what someone or something is

识别

to get rid of waste material, particularly in an unorganized manner

倾倒

a piece of work for someone to do, especially as an assignment

任务

able to exist, happen, or be done

可能的

(of a system or machine) achieving maximum productivity without wasting much time, effort, or money

高效的

the poisoning of bodies of water caused by harmful materials

水污染

a dispenser that holds a substance under pressure and that can release it as a fine spray (usually by means of a propellant gas)

喷雾罐

concerning or used in the scientific field of chemistry

化学的

any object that can be used to store something in, such as a bottle, box, etc.

容器

causing damage or negative effects to someone or something

有害的

an object that turns chemical energy to electricity to give power to a device or machine

电池

in an appropriate manner according to established standards, rules, or expectations

恰当地

the state of something at a particular time

状态

the total number or quantity of something

数量

to have power over a person, company, country, etc. and to decide how things should be done

控制

to get rid of what is not needed or wanted anymore

扔掉

the process of putting a product in a container or covering in order to be sold

包装

a plastic or metal container with a lid, used for putting garbage in and usually kept outside the house

垃圾桶

to discover the exact position or place of something or someone

定位

to move to a higher position or rank

晋升

including every part, member, etc.

完整的

a person who regularly travels to city for work

通勤者

a pathway typically made of concrete or asphalt at the side of a street for people to walk on

人行道

a place where trains regularly stop for passengers to get on and off

火车站

a vehicle that has two wheels and moves when we push its pedals with our feet

自行车

a city's railway system that is below the ground, usually in big cities

地铁

a building, usually next or attached to a house, in which cars or other vehicles are kept

车库