Before the race, he is fine. But afterwards he is worn out.赛前他状态很好，赛后就筋疲力尽了。To use a well-worn cliche, it is packed with information.说得老套一点，其内容翔实。The flagstones beneath their feet were worn smooth by centuries of use.他们脚...
Some oscillation of the fuselage had been noticed on early flights.在之前的几次飞行中，就已经察觉到机身有些摇晃。Its oscillation depends on the strength of the gravitational field.它的振动幅度取决于引力场的强度。the oscillation of the compass needle罗盘指针的摆动...