1·Wind is a current of air caused by a vacuum caused by hot air rising.
风是由热空气上升产生真空而引起的空气流动。
—— 《柯林斯英汉双解大词典》
2·That's not just hot air.
那不仅仅是吹牛。
3·Are you full of hot air?
你在吹牛吗？
4·It uses hot air.
它使用热空气。
5·A balloon can fly in the air because hot air rises.
气球能在天空飞是因为热空气会向上升。
6·The cause appears to be in part greater turbulence in the urban atmosphere as hot air rises from the built-up surface.
部分原因似乎是热空气从楼宇密集的表面上升，造成城市大气的更大湍流。
7·His justification for the merger was just hot air.
他提出的合并理由只是连篇空话。
—— 《柯林斯英汉双解大词典》
8·A blast of hot air hit us as we stepped off the plane.
我们下飞机时，一股热浪向我们袭来。
—— 《牛津词典》
9·How to fly a hot air balloon?
如何驾驶热气球？
10·The rain can cool the hot air.
那场雨使闷热天气凉快了不少。