Because it needn' t modefy the operating system, this method can be easy realized and spread.

因为不用改动操作系统，实现容易，便于推广。

youdao

They needn't be thought of as vulgar prejudices, one of which is in fact the "prejudice against prejudice."

它们并不一定是粗俗的偏见，这是对偏见的偏见“

耶鲁公开课 - 文学理论导论课程节选

Since this is not a job that can be completely delegated, perhaps it needn't be delegated at all.

FORBES: Who can manage your wealth for you? Look in the mirror.

The good: Up-converting your set to receive digital broadcasts needn't be as expensive as you might think.

NPR: A Year Out, Digital TV Picture Still Far from Sharp

And building managers like Komorowski needn't be tethered to a bunch of screens in a basement control room.

FORBES: Magazine Article