活宝的英文：
a bit of a clown; a funny fellow

参考例句：

Mickey was a good laugh and great to have in the dressing room.
米基是个活宝，在更衣室里总是逗人笑个不停。

Keep your eye on these jokers, you never know what they will come up with.
留神那些活宝，你永远也不知道他们会想出什么样的主意。

bit是什么意思：
n. 一点；少量；钻头
v. 约束；给（马）上嚼口

Little by little and Bit by Bit
积少成多,积沙成塔

The collective wealth has been accumulated bit by bit.
集体的家业是一点一滴地积攒起来的。

A rabid dog bit him.
他被一只疯狗咬了。

clown是什么意思：
n. 小丑；乡下人；蠢货；爱开玩笑的人
v. 扮小丑；装傻；说笑话

They tried to clown.
他们试着扮小丑。

To behave comically;clown.
举止滑稽；扮小丑

You act as or like a clown.
你的举动像一个小丑。

funny是什么意思：
adj. 滑稽的，好笑的
n. 笑话

There was something funny about the accident.
关于这次事故有些可疑之处。

Can you tell me a funny?
你能跟我讲个笑话吗？

The students laughed at the funny story.
听了那个有趣的故事，学生们都笑了起来。