Swing shaft test bench is used to test alignment, calibration and accuracy of system under simulating swing condition in laboratory.

摇晃轴试验台是在实验室模拟摇晃条件下，对被试系统进行对准、标校及精度试验的一种装置。

youdao

It's a laying-swinging patio bench with a mattress on top so that I can rock when I sleep. I love swings and swing every night for an hour in my backyard on our swing set.

我的床还会摇摆。它简直就是一块加了床垫的平放著的秋千架，我在睡觉的时候还可以不停摆动。

youdao

Analysts say that after oral arguments the bench appeared to be split evenly, with Justice Kennedy appearing to hold a swing vote on the case and the section of the law in question in jeopardy.

BBC: US top court hears landmark voting measure challenge