I'm just not good at writing letters.

我只是不擅长写信。

youdao

I'm not good at foreign languages.

我不擅长外语。

youdao

I'm not good at Chinese book language.

我不擅长汉语书语。

youdao

After a year at Sanderson Academy, Mary decided that her handwriting was not good enough to be read clearly.

VOA: special.2010.06.27

Not only am I not an ethicist and I'm not good at those kinds of problems, I'm not much of an artist either.

我不仅不大擅长伦理学,不大擅长回答这样的问题,更不擅长艺术

耶鲁公开课 - 生物医学工程探索课程节选

I'm not good at remembering names.

我不擅长记人名。

I'm good at 实战 - SpeakingMax英语口语达人

"I'm not good at math, and there's a lot of calculations involved, " she confided.

WSJ: Ringling Brothers' Air Apparent

Since my vocabulary was not good at that time, I said, oh, it's ok.

CNN: Interview with Nelson Shin

As Solyndra and other stimulus debacles confirm, governments are not good at picking winners.

FORBES: Move up http://i.forbesimg.com t Move down