这样的火车可以用喷气发动机驱动。
新火车安装了更强的发动机，因此车速更快。
Thee new trains have more powerful engines and are therefore faster.
把这发动机装在火车上花了工程师五小时。
It took the engineer 5 hours to attach the engine to the train.
把这发动机装在火车上花了工程师五小时。
It took the engineer 5 hours to attach the engine to the train.
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