单词：ejector pump
ejector pump的用法和样例：
例句
- Nothing is wrong with the injection pump.喷射泵没毛病。
- Roto-Jet Pump is a new type of high-pressure chemical centrifugal pump.旋转喷射泵是一种新型高压化工离心泵。
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今天要学的一个词是：pump。pump，Pump一般是指泵，或抽水机。可是今天讲的pump是指汽车加油站的泵。英国石油公司宣布停止在阿拉斯加的石油开采，《洛杉矶时报》的标题说：Oilfield Closure t
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By Melinda Smith Washington 28 March 2008 Last month we told you about a young woman in the United States who got an experimental heart pump to help keep her alive. VOA's Melinda Smith has an update on her remarkable story.
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