an unpredictable person who may cause problems
一个无法预测的可能引发问题的人 (yí gè wú fǎ yù cè de kě néng yǐn fā wèn tí de rén)
"He’s a loose cannon who often says things without thinking."
"他是一个松散的大炮，经常在没有思考的情况下说话。" (tā shì yí gè **sōng sàn de dà pào**, jīng cháng zài méi yǒu sī kǎo de qíng kuàng xià shuō huà)
to feel extremely happy and successful
to finish something before the deadline
to understand both perspectives in an argument
to stop a problem before it gets worse
an older person who uses the internet regularly
In the planning or design stage
