桑拿天的英文：
(It is ) sultry and oppressively hot.

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。

oppressively是什么意思：
ad. 压迫地;沉重地

The continuous hot weather is oppressive.
这持续的炎热天气使人难以忍受。

Oppression and exploitation provoked people to rebellion.
压迫和剥削激起人们的反抗。

I can not relieve the oppression of the heart.
我难以消除心头的压抑。

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。