If the mass is displaced from its rest position and released, it will oscillate up and down. 质量如果离开它的静止位置后再释放，将作上下振荡。
To confirm your joystick's center position, leave its handle centered, and then press one of your joystick's buttons. 要确认游戏杆的中心位置，请使其握柄位于中心，然后按下游戏杆的某一按钮。
Ceylon, with its central position, was the place where Chinese merchants met with Arab merchants and heard about the westernmost lands. 锡兰，位于中心位置，是中国商人与阿拉伯商人会合的地方，在这里他们听到了有关西方最远的大陆的情况。
The development of barrier technology of PFT at home and abroad was also reviewed. 同时还介绍了各种阻隔技术的国外发展状况以及国内燃油箱阻隔技术的发展现状。
But overall it hurts economic growth at home, which in turn jeopardizes your financial well-being. 但是整体上会危害国内的经济增长，从而转过来危害你的财务状况。
