乐事的英文：
amusement
joy
satisfaction

参考例句：

a pleasure; a delight; an enjoyment; a joy; a treat
乐事

A cheerful wife is the joy of life
快乐的妻子是生活的乐事

It's been a great pleasure to talk to you.
和你交谈真是天大的乐事。

It's a great treat for them to go to the theater.
他们去看戏真是乐事。

Something that gives great pleasure or enjoyment.
乐事使人高兴和愉快的事情

To this pleasure camping gives an exquisite refinement.
为这件乐事，野营作出了微妙的精心安排。

On a hot day, a cool swim is a joy.
大热天来次凉快的游泳是件乐事。

Having a bosom friend is one of the niceties of life.
得一知己乃人生一大乐事。

It's a fun way to be part of a festive crowd and practice performance skills in the meantime.
身处欢乐的人群之中并即时玩弄演奏技巧是一件乐事。

What a treat to get into the peace and quiet of the country.
进入这乡间和平和宁静的环境真是难得的乐事。

amusement是什么意思：
n. 消遣，娱乐；娱乐活动

An amusement park is under construction.
一座娱乐公园正在兴建中。

They found the baroque architecture amusing.
他们觉得这奇异的建筑式样令人发笑。

Something,especially an amusement,that distracts.
分心的事物分散注意力(或分心)的事物，尤指娱乐，消遣

joy是什么意思：
n. 高兴，愉快，喜悦；令人高兴的人或事，乐趣
v. （因…）高兴，喜悦

Her voice thrilled with joy.
她高兴得声音颤抖。

After joy comes sadness
乐极生悲

No joy without annoy
喜中有忧

satisfaction是什么意思：
n. 满足，满意；欣慰；妥善处理；清偿；赔偿

yield (to); give satisfaction to.
顺从某人的愿望；使某人得到满足。

She wore a look of satisfaction.
她满是满足的表情。

afford sb. great satisfaction
使某人感到很满意