I was always weak in the science subjects.

我总是学不好理科。

《牛津词典》

She used to be weak in English.

她以前英语不好。

youdao

I am weak in speaking and listening.

我的口语和听力都很差。

youdao

Many workers became tired and weak in the heat.

VOA: special.2009.02.21

And in fact, under type checking, different languages sometimes fall on a spectrum from weak to strong typing.

实际上，在类型检查的下面，不同的语言会对应着,从弱到强的一个定型范围。

麻省理工公开课 - 计算机科学及编程导论课程节选

He has that phrase, / "Anything more than the truth would have seemed too weak / to the earnest love that laid the swale in rows.

他写了这样一句，任何超过真理的东西都显得很脆弱/,用最真挚的爱意割下一排排草。

耶鲁公开课 - 现代诗歌课程节选

But the U.S. typically has been weak in Winter Olympics staples like ski jumping and cross-country skiing.

FORBES: Kurt Badenhausen On Sports

Anne Stanback, a gay marriage advocate, says interest in civil unions has been weak in Connecticut.

NPR: For Some, Civil Unions Gain Second-Class Stigma

Those of us that are weak in this area cannot naturally overcome that weakness .

FORBES: Yes, You Can Think Your Way To A Better, Longer Life!