cross crank

例句：

1. 1. The car's engine is a complex machine with many moving parts, including a cross crank and a gearbox.
   这辆汽车的发动机是一个复杂的机器，有许多移动部件，包括一个十字曲柄和变速器。
2. 2. The engineer carefully checked the cross crank to make sure it was properly aligned.
   工程师仔细检查了十字曲柄，确保它正确对齐。
3. 3. The old clock had a broken cross crank, which made it difficult for the clock to keep time.
   这把旧时钟有一个断了的十字曲柄，这使得时钟难以保持时间。