随便一张旧报纸就行。Any old paper will do.我真的该把这些旧报纸扔掉了.I really must fling out all these old newspapers.我正在找我那被埋在一堆旧报纸下面的手提包。I was looking for my handbag, which was buried under a pile of old newspapers....
这个圆筒的体积有多少?What's the volume of this cylinder?通常平动和转动同时发生, 例如,圆筒的滚动.Often translation and rotation occur simultaneously, as in the case of a rolling drum.空气的分子会撞击圆筒的整个筒壁和上下两端.The molecules of air would bombard all s...