We must keep away from some___,for they will do harm to our health.chemistry chemists chemical chemicals

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We must keep away from some___,for they will do harm to our health.chemistry chemists chemical chemicals

We must keep away from some___,for they will do harm to our health.chemistry chemists chemical chemicals
We must keep away from some___,for they will do harm to our health.
chemistry
chemists
chemical
chemicals

We must keep away from some___,for they will do harm to our health.chemistry chemists chemical chemicals
Chemicals 化学物质

chemicals 化学物质

chemicals
化学物质,复数
chemistry 化学,指一门学科
chemists 化学家
chemical 化学物质 单数

D
chemistry
名词 n.
1.化学(学科)
2.化学性质
He is knowledgeable about the chemistry of metals.
他对金属的化学性质知之甚多。
3.化学作用
4.男女间的"来电"
chemist
名词 n.
1.化学家
2.【英】药剂...

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D
chemistry
名词 n.
1.化学(学科)
2.化学性质
He is knowledgeable about the chemistry of metals.
他对金属的化学性质知之甚多。
3.化学作用
4.男女间的"来电"
chemist
名词 n.
1.化学家
2.【英】药剂师,药商
3.【废】炼金术士
chemical
形容词 a.
1.化学的,化学上的,化学用的
He devoted his life to chemical research.
他一生从事化学研究。
名词 n.
1.化学制品;化学药品[C][P1]————————————————[注意,是可数名词!]
He is experimenting with a new chemical.
他正在实验一种新的化学制品。

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