擅长的英文：
be good at
be expert in

参考例句：

She is good at knitting.
她很擅长针织。

An actor skilled at improvising
擅长临场发挥的演员.

He was a whale at fishing in his young days.
他年轻时擅长捕鱼

Are you any good at brickwork?
你擅长瓦工活儿吗？

She is good at designing eye-catching packages.
她擅长设计花俏的包装。

An analytic thinker.
一个擅长分析的思考者。

His paintings also show the cursive script style in his rough sketches.
他以草书入画，擅长粗笔写意

He was a writer who excelled at coining new words
他是位擅长创造新词语的作家。

Her medical interest is general medicine with an emphasis on digestive system hemorrhage and cardiovascular disease.
有20年二甲医院急诊科及内科工作经验，擅长内科常见病及急危重症（休克、肌梗塞、吸衰竭、性中毒、消化道出血、血管意外等）处理,尤其是心血管疾病及呼吸系统疾病的诊治。

Excel in foreign languages
擅长外语

good是什么意思：
adj. 好的；令人满意的；愉快的；仁慈的
n. 好处；利益；有道德的人或事
adv. 好

A good appetite is a good sauce
饥不择食

The prompt goods have good qualities.
当场付款的物品质量不错。

Be not simply good; be good for something.
不要单纯做个好人，还要做个能派上用场的人。

Have a good mind
很想…

Good gracious, no!
天哪，不！

expert是什么意思：
n. 专家；行家；能手
adj. 熟练的；老练的；内行的

He is an expert in language training.
他是语言培训的专家。

The scientist is an expert in the field of Biochemistry.
这位科学家是生化学领域中的专家。

Configuration is a necessity for expert users.
对于专家用户来说，配置是必需的。

In these matters Olympias was an expert and an enthusiast
在这些事情上，奥林匹阿斯是个内行，是个热衷的人。

The product needs an expert evaluation.
这种产品需要专家评估。