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n.水槽；饲料槽；低谷期；低气压；波谷
1、troughs───海槽
2、to rough───变得粗糙
3、trouch───n.废物
4、troughes───烦恼
5、troughed───槽形
6、grough───印墨槽
7、though───conj.虽然，尽管；adv.虽然；不过；然而
8、thorough───adj.彻底的；十分的；周密的
9、through───prep.穿过，从一端到另一端；断开，洞穿；穿行；越过；透过……看到；隔着……听到；一直到底；自始至终；从头到尾检查；通过（障碍、阶段或测试）；直至；经由；凭借；adv.从一端到另一端；通过；从头至尾；通过；直达；径直；（电话）接通着；彻底；adj.直达的；联运的，全程的；直通的；贯穿的，过境的；对穿的，双向的；与楼两对面通透的；进入下一轮的；完结的；（使用）完成，结束；（关系）了结，断绝
1、trough of low pressure extends over 1,000 miles.───低气压槽延伸一千多英里。
2、A new method has been used to simulate the actual blank holding process in deep drawing of a washing trough.───采用新的研究方法模拟水槽拉伸的实际压边过程。
3、The best method to date is to let the waste fibre fall into a trough .───到目前，最好的办法是让废丝落在一个槽中。
4、Any beads trapped in the folds of the clothes fall into a collection trough beneath the door to the machine as the clean laundry is removed.───残留在衣物中的珠子在洗涤后的衣物被拿出时落在洗衣机门下的集珠槽里。
5、Although less than three months, but she had already experienced the joys and sorrows from the peak to the trough.───虽然还不及三个月，但她已经体验了从巅峰到谷底的喜怒哀乐。
6、The old stone cattle trough still sits by the main entrance.───那尊古老的石制牛食槽依旧位于主要入口处。
7、There was also, running the length of the left wall, a giant waist-high cement trough filled with water and dead mosquitoes.───另外一口半人高的巨大水槽一直通到左边的墙壁，里面装满了水以及死去的蚊子尸体。
8、By means of a foot treadle the chain of paddles pushes water along the length of a trough to pour out at the other end.───用脚不停地踩动踏板，水就可以通过水槽流到一个高的地方。
9、Only Luke mentions a feeding trough, shepherds and a chorus of angels.───只有《路加福音》提到了饲槽、牧羊人和天使的歌唱。
1、As the wave bore down on us, the trough deepened.