| 例句 |
It is a fact that hot air rises.热空气会上升是客观事实。Wind is a current of air caused by a vacuum caused by hot air rising.风是由于热空气上升产生真空导致的一种气流运动。Hot air rises.热空气上升。Heat rises because hot air is lighter than cold air.热气往上升是因为热空气比冷空气轻。When the fan goes around it forces the warm air back down.风扇旋转起来时使得热空气后退了。The hot air permitted higher speeds before the critical Mach number was exceeded.热空气可使之在超过临界马赫数之前达到更快的速度。Warm air rises by the process of convection.热空气通过对流上升。 |