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- We have three periods of chemistry a week. 我们一星期三节化学课。
- The scientist probed into the secrets of chemistry. 这位科学家探索了化学的种种奥秘。
- Chemistry was her favourite subject at school. 她上学时最喜欢化学。
- No one can cope with him in Chemistry. 在化学方面,谁也比不上他。
- I am not good at organic chemistry. 我的有机化学学得不好。
- Do wolves belong to the canine species? 狼是犬科动物吗?
- We will do a Chemistry experiment this Friday. 这个周五我们要做化学试验。
- We should do our best to save endangered species. 我们应该竭尽全力挽救濒于灭绝的生物。
- He is an authority in the region of chemistry. 他是化学界的权威。
- I have only a rudimentary grasp of chemistry. 我只掌握了化学的初步知识。
- This rare bird has become an endangered species. 这种珍禽已成为濒临灭绝的物种。
- I have lost my interest in chemistry. 我对化学已不感兴趣。
- He was wearing a strange species of hat. 他戴着一种奇怪的帽子。
- He was still devoted to the study of chemistry. 他仍专心致力於化学研究。
- Physical chemistry is Greek to me. 我对物理化学一窍不通。
- There are many species of chrysanthemum. 菊花品种很多。
- Today the survival of our species is threatened. 今天人类的生存受到了威胁。
- The chemistry of petroleum and its derivatives. 石油化学石油及其复合物的化学
- The giant panda has become an endangered species. 大熊猫已成了一种濒临灭绝的动物。