The plant acts as a sedative in treating neuralgia.这种植物被用作治疗神经痛时的镇静药。He can perform an astonishing variety of acts, including mime and juggling.他能表演好几种令人惊叹的把戏，包括哑剧和玩杂耍。Sean's a fast thinker, and he acts on impulse.肖...
这包裹的封皮扯不开.The cover of the parcel won't tear.我廉价买下了它,因为它的封皮坏了.I got it cheaply as its cover was torn.赫伯尔特用铅笔在一本书的封皮里边写了些什么.Herbert had been writing with his pencil in the cover of a book....
A metering tank is an elementary method of measuring volume flow.量筒是测定容积流量的基本方法之一.Practical flow - metering devices have become available commercially.实用的流量测量装置已在工业上使用.A nearly constant air - fuel ratio is maintained by ...