to choose not to participate in something
选择不参加某事 (xuǎnzé bù cānjiā mǒu shì)
"You can opt out of the newsletter at any time."
"你可以随时取消订阅这个通讯。" (Nǐ kěyǐ suíshí qǔxiāo dìngyuè zhège tōngxùn.)
to reveal something secret unintentionally
a place where powerful people make decisions secretly
when a politician supports or votes for the opposite party
to smile broadly because of happiness
used to say that an activity has been successful up to this...
to do the same work or live the same way as someone else, us...
