我尽量表现得无动于衷。用英语怎么说？

我尽量表现得无动于衷。

I tried to act unconcerned.

tried

adj. 可靠地，经过考验的；v. 试图，努力( try的过去式和过去分词)，考验，磨炼，审讯；

例句
He was tried in absentia and sentenced to seven years in prison.
他被缺席判处七年监禁。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

act

v. 行动，表现，表演，起作用；n. 行为，行动，法案，法令，短节目；

例句
There are many people who still find the act of abortion abhorrent.
仍有很多人对堕胎行为表示厌恶。

unconcerned

adj. 不感兴趣的，不相干的，无关的；adv. 漠不关心地，无忧无虑地，不感兴趣地；n. 漠不关心，无忧无虑，不感兴趣；

例句
Paul was unconcerned about what he had done...
保罗对自己的所作所为毫不在意。