Meaning of mài:
卖
to sell; to betray; to spare no effort; to show off or flaunt
Tā xiǎng bǎ jiù chē mài diào.
他想把旧车卖掉。
He wants to sell the old car.
Tā tài kěwù le, jìngrán mài diào le wǒmen de mìmì.
他太可恶了,竟然卖掉了我们的秘密。
He is so despicable, he actually betrayed our secret.
Tā yuànyì mài chū tā de zhēncáng yǐ zīzhù zhège xiàngmù.
他愿意卖出他的珍藏以资助这个项目。
He is willing to sell his treasured collection to fund the project.
Tā zǒng shì xǐhuān zài péngyǒu quān lǐ mài shēchǐpǐn.
她总是喜欢在朋友圈里卖奢侈品。
She always likes to show off luxury items in her social circle.