她在打壁球时把踝部韧带拉伤了.She tore ligament in her ankle while she was playing squash.玛丽扭伤了足踝, 约翰驮她去看医生.When Mary sprained her ankles, John carried her piggyback to the doctors.他跳下去的时候扭伤了足踝.He gave a wrench to his ankle when he jum...
这需要认真地准备需搭接的两片衣片.This necessitates carefully preparation of the two sections to be lapped.使搭接用凿槽或搭接的方法连结 ( 小块, 例如木头的 )To join ( pieces, as of wood ) by means of a scarf or lap joint.在开关柜中,作为输送电能的母线之间需要搭接, 搭接的可靠性是输、配电网络能否...