闷热的英文：
sultry
sultriness
hot and stuffy
stifling hot

参考例句：

The long and tedious journey, coupled with the hot weather, made us done up
漫长而乏味的旅行，加上闷热的天气，把我们累坏了。

The shop was close and hot, and the atmosphere seemed tainted with the smell of coffins.
店堂里相当闷热，空气仿佛被棺木的味儿污染了。

Rather muggy
又湿又闷热

I hate sultry weather.
我讨厌闷热的天气。

It's very close in this room.
这房内十分闷热。

Muggy, isn't it?
好闷热啊!

It's muggy today, isn't it?
今天好闷热呀!

sultry July weather.
七月闷热的天气

Sometimes it is quite close and muggy.
有时候很闷热很湿热

Summer in Taipei is hot and humid.
台北的夏天闷热潮湿。

sultry是什么意思：
adj. 闷热的；迷人的，性感的

She is a sultry beauty.
她是个性感的美人。

The climax came one sultry August evening.
在8月一个闷热的夜晚，高潮到来了。

It' s really sultry. There isn' t a breath of air / wind
真的闷热得很,一点儿风也没有。

sultriness是什么意思：
n. 闷热,纵情声色

She is a sultry beauty.
她是个性感的美人。

The climax came one sultry August evening.
在8月一个闷热的夜晚，高潮到来了。

It' s really sultry. There isn' t a breath of air / wind
真的闷热得很,一点儿风也没有。

hot是什么意思：
adj. 热的；辣的；很受欢迎的；非常棒的；性感的；棘手的

Hot dog; sausage roll; red-hot; red hot
热狗

Hot summer, hot day. Everyone is slow and lazy.
天很热，所有人都慢吞吞的。

The hot iron seared the trousers.
热熨斗烫焦了长裤。