With the tent flap closed, the heat had been building up under the canvas.
帐篷上的门帘放下之后，热量就开始在帆布下聚集。
He closed up when he found he knew practically nothing about the subject under discussion.
当他发现自己对所讨论的问题实际上一无所知时，就不再开口了。
The road ahead is closed to traffic due to under repair.
前方道路因施工，车辆禁止通行。
It can work under pressure or suction when the Valve be closed.
当阀门关闭时可承受一定的正压或负压。
Research and development and technological process production in the closed process are under programmed management.
在全封闭的流程中，做到生产、加工以及开发、研制程序化管理。
Research and development and technological process production in the closed process are under programmed management.
在全封闭的流程中，做到生产、加工以及开发、研制程序化管理。
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