Stevenson's deeply felt performance is a tour-de-force.是什么意思？

Stevenson's deeply felt performance is a tour-de-force.

史蒂文森感人肺腑的表演真是绝了。

deeply

adv. 在深处，浓浓地，强烈地，精心地；

例句
He was a man who abhorred violence and was deeply committed to reconciliation...
他是一个憎恶采用暴力而坚决主张和解的人。

felt

n. 毛毡；v. 摸索( feel的过去式和过去分词 )，触，深感，以为；

例句
She felt as if his words had granted her absolution.
她感觉他的那番话好似给她下了道赦令。

performance

n. 表演，演技，表现，执

例句
...a charity performance in aid of Great Ormond Street Children's Hospital.
为给大奥蒙德街儿童医院筹资而举办的慈善演出

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。