Ever since we moved last year, I worry a lot about whether I can handle this new job...自从去年我们搬家，我就一直非常担心能否做好这份新工作。She had to cling onto the door handle until the pain passed...她只好紧紧握住门把手，直到不疼了才松开。He flew off the handle a...
宗族族长约瑟夫·肯尼迪通过一系列便笺和博比交流。Joseph Kennedy, the clan's patriarch, communicated with Bobby in a series of notes.19世纪，近亲婚配几乎导致皇室宗族灭绝。In the 19th century, inbreeding nearly led to the extinction of the royal family.不少人因此回到...
抽气泵的排气管应该导向室外空旷处或导向一座通风橱.The pump exhaust should lead to the open air or a fume hood.设计了一套硅片专用真空夹紧装置,包括夹紧装置和微型无油真空抽气泵.A vacuum clamp equipment used for holding Si wafer is designed in this paper....