1. The post office will not shut until 8 p.m.
   邮局要到下午8点才关门。
2. Every pump draws 8 cubic metres of water per second.
   每台抽水机每秒种可以抽水8立方米。
3. 8 The pH value is 8.5 by pH indicator strips.
   用pH试纸测得泥浆pH为8.5。
4. When you divide 8 by 2, you get 4.
   2除8为4。
5. Nearly 8%of the nation's workforce is unemployed.
   全国大约8%的劳动力失业。

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