to keep one's plans or ideas secret
将计划或想法保密 (jiāng jìhuà huò xiǎngfǎ bǎomì)
"He always plays his cards close to his chest in business."
"他总是在生意中玩自己的牌靠近胸口" (tā zǒng shì zài shēngyì zhōng **wán zìjǐ de pái kàojìn xiōngkǒu**)
to increase the intensity or amount of something
to make a decision that cannot be reversed
to go to bed; to sleep
to speak or perform without preparation
to do something with great effort and passion
to become less hot or less angry
