to hide the truth about something
掩盖某事的真相 (yǐncáng cuòwù huò bùdàng xíngwéi.)
"They tried to cover up the mistake."
"他们试图掩盖这个错误。" (Tāmen tōngguò gēnggǎi bàogào lái shìtú yǎngài tāmen de cuòwù.)
to catch someone in the act of doing something wrong
to politely disagree with someone
the use of willpower to overcome physical problems
to make something more interesting or lively
to form groups of two
to be in charge and make decisions