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1·A funny green monster hot-air balloon.

有趣的绿色怪物气球。

2·The hot-air balloon soon rose to the sky.

热气球很快升到了空中。

3·I want to hop the Atlantic by a hot-air balloon.

我想乘坐热气球飞越大西洋。

4·His initial hot-air balloon strategy failed, however.

但是他首次的热气球战略却失败了。

5·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》

6·It uses hot air.

它使用热空气。

7·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。

8·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》

9·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》

10·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。

(1)hot-air balloonn. 热气球