He got a job with a real estate firm and it was a real bit of fat.

他在一家房地产公司找到了一个工作，那真是一份肥缺。

《新英汉大辞典》

You want a little bit of fat, you want pork, you want lamb?

你想要有一点肥肉，你想要猪肉，还是羊肉？ 我们会设计完全符合你要求的肉。

article.yeeyan.org

If I had the body with total muscles (with 0% fat) before, now I have to exercise to make more flexible body with a bit of fat in it.

如果之前我身体总的肌肉(0 %脂肪)，现在为了更灵活必须让身体有适量的脂肪。

blog.sina.com.cn

They're used by the body for pretty immediate energy where fat is a little bit more long-term energy, and there are many types of sugars-- and these are things that you've heard-- glucose and sucrose being the most common things that you can consume in ordinary foods, and then lactose of course, from milk.

碳水化合物被身体当做是直接能源,而脂肪则更像是一种长期能量,糖的种类有很多,这些类型你们已经听说过,葡萄糖和蔗糖是最常见的形态,你们可以在一般的食物中获取,乳糖,显然来自于乳类

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

String cheese, for instance, is high in protein, offers a bit of fat and has only 80 calories.

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Their fat little heads are set on their fat little bodies without a bit of connection.

NEWYORKER: Secrets and Lies