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They use a piston engine instead.是什么意思？

They use a piston engine instead.

他们改用活塞发动机.

相关词汇
they use piston engine instead

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

use

n. 使用，使用权，功能；

piston

n. <机>活塞；

engine

n. 发动机，引擎，工具，火车头，机车；vt. 给…安装发动机；

instead

adv. 代替，顶替，反而，反倒；
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