to learn from an unpleasant experience so as not to repeat it
从不愉快的经历中吸取教训，以避免重复 (cóng bù yú kuài de jīng lì zhōng xī qǔ jiàoxùn, yǐ bìmiǎn chóng fù)
"After being late several times, he finally learned his lesson."
"在多次迟到后，他终于吸取了教训。" (zài duō cì chídào hòu, tā zhōngyú xī qǔle jiàoxùn)
something that suits one’s interests or abilities perfectly
something that happens which you always wished for
to save money for future emergencies
to have an advantage or be well prepared
In a situation that is unknown or unfamiliar.
To work as a group to achieve something.
