比四冲程发动机重量更轻。

Lighter weight than four-stroke engines.

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四冲程发动机的水平。

Four stroke horizontal engine.

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这样说来，两冲程发动机的点火次数是四冲程发动机的两倍。

Thus, a two-cycle engine fires twice as often as a four-cycle engine.

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这样说来，两冲程发动机的点火次数是四冲程发动机的两倍。

Thus, a two-cycle engine fires twice as often as a four-cycle engine.

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