tā / píng / shí / ài / kāi / wán / xiào / dàn / tán / gōng / zuò / shí / què / zhèng / jīng / bā / bǎi / de

他平时爱开玩笑，但谈工作时却正经八百的。

He usually likes to joke, but when it comes to work he is very serious.