beeline

The late boy made a beeline for his classroom.

迟到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.

摘要曲柄连杆机构是自化中最常用机构之一，它可使旋转运复直线运相互转化。