It's even worse if one of those calculations has side effects (like printing, modifying a global variable, etc.) because these side effects will be processed twice.

如果这些计算有某些副作用(例如打印、修改全局变量等)，那情况就更加严重了，因为这些副作用都会被处理两次。

youdao

Pages to view: The number of pages on a printing plate, and therefore on one side of a printed sheet .

版上页数：在印版上的页数，即是印刷纸张一面上的页数。

youdao

This correspondent has always believed in printing on both sides of paper and has been known to put paper printed on just one side back into the office printer, upside down.

要是看见有只印了一面的纸，我一定会把它翻转过来再印一次。 大家也都知道我这样的脾气。

youdao

Dohle, who is forty-one years old, rose as an executive on the printing side of Bertelsmann A.G.

NEWYORKER: Publish or Perish