我要做的只是保持适度的冷静。All I had to do was be halfway cool.与通常的看法相反，适度的运动事实上会降低食欲。Contrary to popular belief, moderate exercise actually decreases your appetite.适度的压力是有好处的，但是压力太大会把人压垮。While a moderate amount of stress can be bene...
钟表的摆轮是角谐运动的常例.The balance wheel of a watch is a familiar example of angular harmonic motion.钟表的指针指着十点.The hands of the clock pointed to ten.那个孩子还看不懂钟表的走时.The child can not tell the time yet....