Someone who acts as if they know everything.
一个表现得像是知道一切的人。 (yīgè biǎoxiàn dé xiàng shì zhīdào yīqiè de rén)
"He’s such a know it all, it’s annoying."
"他是一个自以为是的人，这让人讨厌。" (tā shì yīgè **know it all**, zhè ràng rén tǎoyàn)
to ignore or hide a problem or mistake
an achievement to be proud of
something that is being developed or planned
directly involved in the most active or dangerous part of so...
to stop talking or thinking about something stressful
a sudden realization or understanding
