;The late boy made a beeline for his classroom.
迟到的男孩抄捷径跑去上课。
The late boy made a beeline for his classroom.
迟到的男孩抄捷径跑去上课。
The crank and connecting rod mechanism (CCRM) is often used in automatization machineries.It can transform circumrotation movement into to-and-fro beeline movement.
摘要曲柄连杆机构
化中最常用的机构之一，它可使旋转运与往复直线运相互转化。
声明：以上例
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