Word Meaning
source
n.来源，源头
chemical作名词时，其复数形式是......
Unsafe water not only makes people ill but also causes deaths.
水质不安全不仅会导致疾病，还会造成死亡。
use变成动词"重复使用"
reuse
Do you know the man _____(stand) by the car?
standing
Do you know the man standing by the car?
你认识站在车旁的那个人吗？
chemical
n.化学品/adj.化学的
pollute的名词形式，表示“污染”
pollution
What are major sources of water pollution？
水污染的主要来源有哪些？
oxide变为“二氧化物”
dioxide
The trees ______(plant) by students grew quickly.
planted
The trees planted by students grew quickly.
学生们种的树长得很快。
substance
n.物质
primary的副词形式，表示“首要地；主要地”
primarily
Based on the generation source, waste can be divided into two groups.
根据产生来源，废物可分为两类。
hazard变为形容词“有害的”
hazardous
The news that he will come back is true.
这是that引导的同位语从句还是定语从句？
classification
n.分类；归类
efficient的副词形式，表示“效率高地”。
efficiently
Efficient waste management is an essential part of society.
高效的废物管理是社会的重要组成部分。
technic变为名词“技术员"
technician
翻译强调句： It is your company that we want to cooperate with.
我们想要合作的正是贵公司。
accessible
adj.可使用的
contaminate的名词形式，表示“污染”。
contamination
It's the quantity (or concentration) of a chemical in the air that makes the difference between "harmless" and "pollution."
空气中化学物质的数量（或浓度）决定了空气是“无害”还是“污染”的 。
forest变为动词“森林砍伐”
deforest
改为强调句：The meeting didn't end until yesterday.
It was not until yesterday that the meeting ended.