主发电机调速器用于检查油等级的检查玻璃需要换新。
The inspection glass for oil level of main generator engine governor, to be renewed.
在这儿我们换新了几根油管，漏在甲板上的油也用木屑擦过了。
We have also renewed a few pipes here and wiped away the oil lift on deck with saw dust.
避免了圆珠笔总是笔油用不完就要将笔芯弃旧换新，而带来了麻烦和浪费。
The trouble and the waste caused by abandoning the core of the ball pen and changing a new one without using up the ink are avoided.
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