The lock is rather stubborn; it needs oiling.
这把锁相当难开，它需要加油了。
youdao
And just what has been done by the oiling and smoothing?
但是在车轮上涂油和把路修平有什么作用呢？
They keep oiling the machine.
他们保持给机器上油。
应用推荐
模块上移
模块下移
不移动