Keep a check on it, and put the drain plug back on when the oil has finished draining.

继续检查，并把排水管堵塞时，回到石油已完成排水。

youdao

Keep a check on it, and put the drain plug back on when the oil has finished draining.

继续检查，并把排水管堵塞时，回到石油已完成排水。

youdao