护照过期是无效的.A passport that is out of date is invalid.今天宇航员将会做最后一次尝试，力图把一颗通信卫星从无效的轨道上抢救下来。Astronauts will make a final attempt today to rescue a communications satellite from its useless orbit.此外，他们还声称任何这样的干预都是完全无效的。Further...
The subject of racism is admittedly too complex for facile summarization.无可否认，种族主义这个话题太过复杂，不可能一言蔽之。She has a facile tongue.她口齿流利.In this special field she is facile princeps, and has left all competitors behind.在这一特定领域里她...
"You must come to Tinsley's graduation party." — "I'd be delighted."“你一定要来参加廷斯利的毕业聚会。”——“我很乐意。”There are thousands of students absolutely gagging to come to this university.肯定有成千上万的学生都渴望到这所大学念书。They had invited...
最幸福的人们并不一定什么都是最好，只是他们懂得欣赏生活的美好。The happiest are not those who own all the best things, but those who can appreciate the beauty of life.她在梦中焦虑不安，反映了她白天生活的基调。Her dreams were troubled, reflecting the tenor of her waking hou...
We are trudging a plain high road.我们正徒步跋涉在平坦的大道上.The dog ran, and Mr Taylor's trudging wellingtons made the only sound.茂密的杉树林淹没了从爱丁堡到格拉斯哥高速公路上传来的噪音,只有猎犬发出的声音和泰勒穿着高统靴走路的悉索作响.There was a stream of refugees trudging up...