Undo the oil drain plug on the oilcontainer and drain off the oil.
拧下机油箱上的放油塞，并排放机油。
2
The paper introduces the specific advantage and the structural patterns of such soft oilcontainer, and the roles of those structural composing parts as well.
文中介绍了这种软体油罐的特有优点和结构形式，及其结构各组成部分的作用。
3
With the bottom of the projection of a white transparent container filled with water, then drip in the water the color ink or oil-based paint.