I'm not strong enough to carry him.

我不够强壮，抱不动他。

《柯林斯英汉双解大词典》

I'm not strong enough, 'I said.

“我没这么大力气，”我说。

youdao

I'm not strong enough.

我还不够强壮。

youdao

I'm not strong enough to carry a week and a half worth of groceries home.

我实在没力气把一周半所需的食品杂货都搬回家。

与众不同的纽约 - SpeakingMax英语口语达人