I used to be all sweetness and light on the outside, but inside I would be boiling with rage.

我过去虽然表面上笑呵呵的，可是心里却怒火中烧。

《柯林斯英汉双解大词典》

Inside I felt feminine–and I still do.

内心深处，我觉得自己很女性化——现在依然如此。

youdao

Inside I am a happy content person.

在心里，我是一个快乐满足的人。

youdao

"We are going to see a dynamic, exciting political process that will happen inside Iraq and I think that we will emerge with a government that is made stronger by the negotiating process."

VOA: standard.2010.03.12

I mean the calorimeter is a big thing filled the little oil or whatever is inside it, right?

装满了油或别的什么东西,对吧？

麻省理工公开课 - 热力学与动力学课程节选

If I looked inside it has the same kinds of components inside, it has the same DNA inside the nucleus.

深入剖析的话,它们有同样的构成元件,细胞核里同样有DNA

耶鲁公开课 - 生物医学工程探索课程节选

"Deep inside my dream is to win a Slam and deep inside I know I can make it, " Monfils said.

WSJ: Monfils Looks Back in Form at the French Open

Once inside I discovered a world filled with breath taking rocks and minerals everywhere, glistening fresh water at the bottom and hundreds of bats sleeping overhead.

FORBES: The Brooklyn-Grown Archeological Shop Inspired by Sacred Mayan Sinkholes

Deep inside I didn't really want to get out there.

BBC: Brave Smith beaten but not down