1) so hot 好热！2) hot out 外面很热；3) scorcher 炎热的天气

OMG! It's so hot today! 哎呀！今天这么热！I know! It's so hot out! 对啊！外面太热啊！It's a scorcher! 天气炎热！

4) heat wave 热浪；5) sluggish 倦怠

This heat wave has made everyone so sluggish. 这阵热浪已使每个人感到倦怠。

6) sweltering 酷热的

It was a sweltering 100 degrees out today! 今天这么热啊！气温达到100华氏度。

7) humid 潮湿的；8) hot and sticky 又热又潮，身上粘乎乎的

Not only is it hot, but it's SO humid today! 今天不仅很热，还很潮湿啊！

I hate hot and sticky weather! 我讨厌火热和潮湿闷热的天气！