英语翻译significant advances have been made in the understanding

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/22 13:11:58

英语翻译
significant advances have been made in the understanding of the biological and chemical nature of olfaction,but many fundamental questions have yet to be answered.researchers have still to decide whether smell is one sense or two ---one responding to ordours proper and the other registering odourless chemical in the air 【主要是第researchers have still to 以及have yet to be answered怎么理解】

Researchers have still to = 研究人员仍需.
have yet to be answered = 尚没有答案
（近年来）,对于了解嗅觉的生物与化学性质有了重大进展,然而,还有许多基本重大问题尚没有答案.研究人员仍需判断,到底嗅觉是一种还是两种感观意识 ,其中,一个意识是对气味做出正确反馈,另一个意识是记录空气中无味化学物质的情况.
再问：最后一句one responding to ordours proper and the other registering odourless chemical in the air 不会断句啊
再答：嗯，我想也可能是 “一个意识是对气味的主要部分做出反馈”。 Longman dictionary of contemporary English 4. Proper [only after noun] the real or main part of something, not other parts before, after or near to it. Example: The friendly chat which comes before the interview proper is intended to relax the candidate. or Example: the city center proper. Proper - used by some people to mean properly. although most people think that this is incorrect.

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