A good mechanic is worth his weight in gold.

一位优秀的技工是不可多得的。

《牛津词典》

Red meat was the main source of octopine, which was good for losing weight.

红肉是肉碱的主要食物来源，肉碱有利减肥。

youdao

With high strength, light weight, good seal, the advantages of long life products.

具有强度高，重量轻，密封性好，产品使用寿命长等优点。

youdao

Running is also a good way to lose weight.

VOA: special.2010.06.08

Good, the question was what about somebody ? who loses huge amount of weight?

很好，她提的问题是，对于,那些拼命减肥的人，该如何看待？

耶鲁公开课 - 死亡课程节选

I have been gaining weight and don't feel good about it.

我的体重又升上去了，我可不想这样。

Why don't 实战 - SpeakingMax英语口语达人

For most, but not all, maintenance of a normal weight and a good diet will prevent development of type 2 diabetes.

CNN: What's the difference between type 1 and type 2 diabetes?

That's a big goal -- because we want kids born today to grow up healthy and at a good weight when they reach adulthood.

WHITEHOUSE: Let's Move Rally in Jackson, Mississippi

And although the picture sometimes turns clunky and flat, as if it were sagging under the weight of its good intentions, it winds up being devastatingly effective.

NEWYORKER: Dead Man Walking