to forget something accidentally
不小心忘记了某事 (bu xiaoxin wangji le mǒushi)
"Sorry, it completely slipped my mind to call you."
"对不起，我完全忘记给你打电话了。" (duibuqi wo wanquan wangji gei ni da dianhua le)
to improve by learning from past failures
To stay honest and genuine.
To follow rules or policies strictly, often without question...
to undergo a significant change or improvement
full of energy and excitement
A situation or person that could become dangerous at any mom...
