busy 是什么意思？busy的学习方法【知识点总结】

adjective [原级]繁忙的，忙碌的；热闹的；全神贯注的；占线的；繁琐的，杂乱的They are busy preparing for a hectic day's activity on Saturday.他们正忙着为星期六这一天热闹的活动做准备。

verb [vt. 及物动词]使自己忙于He busied himself with the camera.他忙于摆弄这部相机。