这将是一场激烈的竞争，但我在心理上已经做好了准备。

It's going to be a tough competition but I'm ___mentally prepared for it.

团队运动帮助孩子在心理和身体上共同发展。

Team sports help children develop both ___mentally and physically.

尽管年事已高，她思维依然敏捷。

She remains ___mentally sharp despite her age.