My body feels cold, but my heart feels warm.

我的身体很冷，可是我的心却很温暖。

youdao

I tried to learn some lines but my heart wasn't really in it.

我试图记住几行诗句，但我确实对此不感兴趣。

《柯林斯英汉双解大词典》

I continued with the cleaning with my friends, but my heart was no longer on the work.

我和朋友们继续打扫，但我的心已经不在打扫上了。

youdao

Deep in my heart I hated him, but I never said or did anything that showed him how I really felt.

VOA: special.2009.02.07

But of course,there's nothing wrong about taking my heart,even though I still exist.

但这时候即便我存在，从我身体中取出心脏也是可以的。

耶鲁公开课 - 死亡课程节选

But I very... I've been told I wear my heart on my sleeve.

但我很……有人说我很直白。

幸福的定义 - SpeakingMax英语口语达人

My head tells me that it is a nonsense but my heart completely disagrees.

WSJ: Her Maj: 60 Years of Unofficial Portraits of the Queen | Cartoon Museum | Too Gentle on the Queen? | By Richard Holledge

"I wanted to feel a connection with him, but my heart is cold, " Jal told The Independent.

NPR: Emmanuel Jal: From Child Soldier to Rising Star

All the factors say go, but my heart says no.

BBC: Mardell: Donald Trump forgoes White House bid