And the way I remember that is I put a little cross here, and then I make that the plus end.

我还记得要,在箭头尾部打个叉，然后让加法完结了。

麻省理工公开课 - 固态化学导论课程节选

So I simply print, highlight, and give a big "X" and a zero.

我会简单地打印一下，标记出来，然后打一大把叉，给个零分。

对于抄袭的想法 - SpeakingMax英语口语达人