adj.不重要的;
例句:
The matter was so unimportant that she dismissed it from her mind.
此事太无足轻重,她将它置之脑后.
relatively/comparatively unimportant
相对 / 比较次要的
It was an unimportant job, and paid very little...
这份工作无足轻重,而且薪水还很低。