1·The sense of smell, or olfaction, is powerful.
嗅觉，是很强大的。
2·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.
在理解嗅觉的生物学和化学性质方面已经有了重大进展，但许多基本问题仍有待回答。
3·Not only is this the first evidence for a sense of smell in bacteria, the results also might represent one of the earliest forms of olfaction in evolutionary history.
这不仅是首次提出细菌能够识别气味，同时这项结果表明在进化史上最早期的一种嗅觉形式。
4·D: Smell, or olfaction, as scientists call it, is an important sense for many fish.
对很多鱼类来说，嗅觉是一种很重要的感官。
5·According to two studies presented to the International Symposium on Olfaction and Taste, held in San Francisco this week, that is exactly what happens.
在旧金山举行的嗅觉暨味觉国际研讨会上公布的两项研究表明，情况正是如此。