Not all little black dresses should come in silky or velvety materials. You can save the cotton pieces for a hot day or a humid night.

不是所有的黑色小礼服都要是丝绸或天鹅绒质地的。你可以把棉布的裙子留给炎热的一天或者潮湿的夜晚。

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Swimming on a hot day is sheer bliss.

热天游泳是天大的乐事。

《牛津词典》

Not surprisingly on such a hot day, the beach was crowded.

在这样的大热天，海滩上人头攒动是不足为奇的。

《牛津词典》

It was a hot day, and the road was dusty.

VOA: special.2009.08.27

You're about to drink it, right, because you're thirsty, it's a hot day, you love milkshakes.

你正要喝奶昔，对吧，因为你很渴，天很热，你喜欢喝奶昔。

耶鲁公开课 - 死亡课程节选

Especially on a day like this, a nice, hot, sunny day like this, the park's a lot busier.

特别是在一个这样的日子，美好的、温暖的、阳光的一天，公园会更热闹。

海德公园的氛围 - SpeakingMax英语口语达人

If you miss a bottle or two on a hot day, then it could be game over.

BBC: SPORT | Other Sport... | Cycling | Armstrong 'has only three rivals'

Exhaust from the engine consists of harmless atmospheric air, cold enough to serve as air-conditioning on a hot day.

FORBES: Driving on Air

It is often served in a stainless-steel cup and, along with some people-watching, makes a perfect post-train-ride break on a hot day.

BBC: Riding the rails like a Mumbaiker