我说，它只是廉价的黄色食品，不是非常让人有食欲。

It was just cheap yellow food, I said, not terribly appetising.

youdao

你是否减少或增加了5%的体重，你是否注意到你有在食欲方面明显的增加或减少？

Have you lost or gained weight recently within 5% in either direction, and have you noticed a significant increase or decrease in appetite?

youdao

打了一针激素后，不管每种气味有多么地刺激食欲，志愿者们都更深深地吸气，甚至只是吸普通的空气。

And regardless of how appetizing each aroma was, the volunteers took deeper whiffs-even of plain air-after getting a shot of ghrelin.

youdao