| 单词 | booster pump |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔necessitate〕Frank was carrying out fuel-system tests which necessitated turning the booster pumps off.弗兰克在做燃料系统测试，这一测试需要关掉升压泵。柯林斯高阶〔necessitate〕Frank was carrying out fuel-system tests which necessitated turning the booster pumps off.弗兰克在进行燃料系统检测, 这就需要关闭增压泵。外研社新世纪 |
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