| 释义 |
- 1
Newer four-strokes are heavier than older two-strokes, so if you (or the previous owner) replace the outboard, you need to make sure the bracket is still appropriate. 新式的四缸发动机要比老式的双杠发动机更重，因此如果你（或者之前的船主）更换了舷外发动机，你需要确定支撑臂仍然合适。 - 2
The man in the new study, an African living in Switzerland at the time, suffered the two strokes in his 50s, weeks apart, and was profoundly blind by any of the usual measures. 此项新研究中的病例是一个居住在瑞士的非洲人，在他50多岁的时候得了两次中风，隔了几个星期以后，他出现进行性失明，并且没有什么有效地治疗措施。 - 3
If it needs only two strokes to complete a cycle, it is called a two-stroke cycle engine or, for short, a two-cycle engine. 如果发动机完成一个工作循环，只需要两个行程，就称为两冲程循环发动机，或者简称两冲程发动机。
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