The hot air makes the balloon stay up(划线提问) The hot air 划线

The hot air makes the balloon stay up(划线提问) The hot air 划线 The hot air make the balloon stay up.中文是什么 Lifting off at sunrise,the hot air balloon goes wherever the The rate of change of the altitude of a hot-air balloon is g 一个物理题.帮帮,A hot air balloon decends toward the ground with a hot-air balloon的意思 the hot air moves up__it gets cold it cooled down the hot air The hot air moves up after it gets hot.滴意思,快 today the weather was hot any sunny对划线提问 The air pollution comes from the fire.对划线部分提问.划线部分为the fire. Hot air balloons have burners to keep the air hot.动词不定式做定语还是