to start behaving better after doing something wrong
在做错事之后开始表现得更好 (zai zuo cuo shi zhihou kaishi biaoxian de geng hao)
"After the accident, he decided to turn over a new leaf."
"事故后,他决定重新做人。" (shigu hou ta jueding chongxin zuoren)
to be nervous, tense, or easily upset
to criticize someone angrily
To be aware of what is happening around you.
to say something unintentionally that was meant to be secret
to go ahead or be in front in a competition
someone who will never be your friend