可以选择的

I only eat the mangoes; I don't need to know the number of trees and leaves.

我只需要吃芒果；我不需要知道有多少棵树，有多少片树叶。

Wash-up: The cleaning of the inking and printing units of a press prior to a change of ink or shut -down of the machine.

清洗印机：在转换油墨颜色或下班停机前，把滚墨系统和压印系统清洗的情况。