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at call的英文翻译是什么意思,词典释义与在线翻译:
参考翻译
at call的用法和样例:
例句
- The doctors in our hospital are at call day and night.
我们医院的医生随叫随到。
- He has a large number of reference books at his disposal.
他有大量的参考书可供使用。
- Airliners in service at present cannot fly faster than the speed of sound.
目前供使用的客运机飞行速度不能超过音速。
词汇搭配
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