conscience ·noun
Definition: the part of you that makes you feel guilty when you have behaved badly Level: C2
这位政治家在收受贿赂后，一直被内疚的良心所折磨。
The politician was haunted by a guilty ___conscience after accepting the bribe.
即使多年以后，她仍为自己说过的谎话而感到良心不安。
Even years later, her ___conscience was troubled by the lie she had told.
这个小偷最终被捕，不是被警察，而是被他自己的良心——这促使他坦白了罪行。
The thief was finally caught, not by the police, but by his own ___conscience, which led him to confess.