He was so happy doing it.

他是那么乐意登山。

youdao

But over time I began to realize that I was not that happy doing what I was doing every day.

但随着时间的推移，我开始感觉我每天所做的事情并不能使我开心、满足。

youdao

What you thought of "Cool! I'll be happy doing it my entire life" when you were a teenager might seem like nonsense when you are even in your 20s.

当你在还未成年时想“真棒，我下辈子就干这个了”的时候，大家把它当耳旁风，哪怕你20出头了，大家还是会这么想。

youdao

I hoped whatevershe was doing made her happy.

VOA: standard.other

A man who is living in a polis not doing well, how can he be happy? There's just no way.

一个生活在城邦里的人没有做好本分,他怎么会幸福,这是不可能的事情

耶鲁公开课 - 古希腊历史简介课程节选

if you are doing something that you hate and you are not happy, why bother?

如果你做自己讨厌的事情，就会不高兴，何必呢？

怡人的的汉普斯特德 - SpeakingMax英语口语达人

Some people are happy doing a job and getting paid enough to live a decent life.

FORBES: Finally, A Billionaire Defends The Billions That She Earned

Obama at town-hall meetings appears engaged but not fervently so, as if there were several other things that he would be equally happy doing that day.

NEWYORKER: The Conciliator

"Stephen's been very happy doing what he's doing and doesn't want to be the king, " says his father, Charles, who was cochairman of Seagram from 1986 to 2000.

FORBES: The Other Bronfman