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, weak to see who.

我不坚强、又软弱给谁看。

youdao

The only trouble is I'm not strong enough!

恩·~可惜，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

I'm being a bit strong, but not too much.

我有些强势,但不过分

耶鲁公开课 - 古希腊历史简介课程节选

So my walk is, it's not confident and I'm not sure if I'm strong in my step yet.

所以我的走姿不是特别自信，担心步伐会不稳。

I wonder if 实战 - SpeakingMax英语口语达人

"I'm not convinced, but there's certainly a strong possibility that's going to happen, " Mets manager Terry Collins said.

WSJ: Teheran strikes out 7 as Braves beat Mets 2-1

As I've said before, I'm for a strong dollar, but not just yet.

FORBES: Magazine Article

Iran is developing a nuclear capability, and I'm not sure we're going to be able to stop them unless we take very strong action because many of our European counterparts aren't being cooperative in trying to put economic and diplomatic pressure on them.

CENTERFORSECURITYPOLICY: "Fixing" US-Latin American relations