to make a serious mistake or spoil something
犯严重错误或弄坏某物 (fàn yánzhòng cuòwù huò nòng huài mǒuwù)
"I really screwed up the presentation."
"我真的把演讲搞砸了。" (Wǒ zhēn de bǎ yǎnjiǎng gǎo zá le.)
attempting to obtain sensitive information by disguising one...
the most important fact or result
very early in the morning
to attribute something to a particular cause
to suspect something wrong or dishonest
to feel sad or depressed