2007.10.15 : When I think about it, it makes my mouth water.
想起它我都会流口水。
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固定表达make one's mouth water，就相当于汉语中的“使……流口水”，是个不太正式、偏于口语的用法。
例句：
The roast duck that restaurant serves is my favorite dish. Every time I think about it, it makes my mouth water.
我最喜欢吃那个饭馆的烤鸭。每当我想起它我就会流口水。
海纳百川，有容乃大；壁立千仞，无欲则刚。