subtle
单词辨析：
指细节、变化、区别等十分微小，因而难以理解或觉察的，通常作定语。
She pursues perfection and pays attention to all the fine details.
她追求完美，关注一切细节。
Have you noticed that fine distinction?
你注意到那个细微的差别了吗？
指局势、问题、讨论等需要谨慎对待的，以免引起问题或触怒某人。
You'd better give a second thought to the matter because this is a delicate problem.
这是一个微妙的问题，你最好再好好想一想。
This delicate situation requires you look before you leap.
这种微妙的局面需要你三思而后行。
指气味、差别、行为等只有通过仔细观察才能注意或感受到的，常含褒义。
The subtle fragrance made him sleepy.
淡淡的香气使他昏昏欲睡。
Although from the same designer, there are subtle differences between the two styles.
尽管出自同一位设计师之手，这两种风格之间还是有细微差别的。
He was a little slow this morning and paid no attention to her subtle hint.
他今早反应有点儿慢，没注意到她微妙的暗示。
相关例句：
We can use our eyes and facial expressions to communicate virtually every subtle nuance of emotion there is.
我们用眼睛和面部表情几乎就能传达出情感上的每一丝微妙变化。
'That's much too subtle, even for Sam.' — 'Even for Sam!' He pounced on the phrase with a sound of triumph.
“那太微妙了，即便对萨姆来说。”——“即便对山姆来说！”，他得意洋洋地抓住了这句话。
She will introduce the subtle system related our physical body, and experience the realization.
她要介绍和身体相关微妙的系统和实现经验。
It's subtle, you have to be intuitive or watch clues.
运用你的直觉或对线索的观察去体验这微妙的关系。
It's a subtle distinction, but one that is critical in quantum computing.
这是一个细微的区别，但却是量子计算中的一个重要区别。
Intolerance can take subtler forms too.
过敏反应也可能会表现得很不明显。