pick up speed与accelerate有什么么区别?

pick up speed与accelerate有什么么区别? 英语pick 与pick up 有什么区别 Speed up speedup与speed up有什么区别? 求翻译Once you're over the hill,you begin to pick up speed. pick up pick up pick up pick up 与acquire的区别 pick up 与 collect 的用法 pull up 与pick up 有什么区别 ( )your speed and you can win the first prizea.pick up b.put up c.keep up d.get up选择答案 pick sb up与pick up sb 中的sb分别是什么格可以追给! 有pick up it 这么用的吗?与pick it up怎么区别? pick up your pen.与pick your pen up.哪个对 pick out;pick up;pick over区别 pick up 作 继续 解释时后加doing吗the train began to speed 用pick的短语填空inspire doing sth对吗 pick them up还是 pick up them