她十分虔诚,每个星期天都上教堂.She is very religious person who goes to church every Sunday.她十分虔诚,每星期都上教堂.She is a very religious person who goes to church every Sunday.上教堂的人比以前少些.Less people go to church than before....
A vibrating membrane in the ear helps to convey sounds to the brain.耳膜的振动帮助声音传送到大脑.In wind instruments the sound is produced by a vibrating air column.管乐器的声音是由振动的气柱产生的.Stationary waves are also produced in vibrating colu...