He took a mouthful of water and swirled it around his mouth.

他含了一口水，漱了漱口。

《牛津词典》

Both boats purred out of the cave mouth and into open water.

两条小船翁翁地驶出洞口，到了开阔的水面上。

《柯林斯英汉双解大词典》

I am very sorry to make your mouth water, but these, as you know, are five new gold pieces.

我很抱歉让你流口水了，但你知道，这是五个新金币。

youdao

And then for some reason, that nobody understands, 16/15 he decided to multiply again by 16/15, and that's how we get 32 for freezing of water and 96 in his words for the temperature in the mouth or underneath armpit of a living man in good health.

然后，因为同样的原因，没人搞得明白，他决定再乘以，现在水的冰点变成了32度,而96度，拿他的话来说,是健康状况良好的人,口腔或腋窝的温度。

麻省理工公开课 - 热力学与动力学课程节选

Coming from Australia, where seafood is tops, I usually only eat oysters when Down Under, but the sale's oysters made my mouth water.

WSJ: Collecting: Lots of Taste in Paris Food Auction

Moreover, new welterweight king Cory Spinks and the wild-talking Ricardo Mayorga look likely to share a ring again in 2004 - a prospect to make the mouth water.

BBC: SPORT | Boxing | Year of promise for fight fans

Just the mention of sourdough pancakes makes my mouth water.

NPR: Sourdough: More than a Bread