每日商务英语 第670期:爱开玩笑的

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jocular --------- 爱开玩笑的（形容词）

英文释义
(adjective) Tending to make jokes often and to behave in a lighthearted manner.

例句
My normally silent and serious relatives often become talkative and quite jocular at family birthday parties.
在家庭的生日聚会上，我的那些一般不爱说话、很严肃的亲戚们经常变得健谈，很爱开玩笑。