He felt very flat after his friends had gone home.

他的朋友们回家后，他感到兴味索然。

《牛津词典》

John: As flat as a pancake – a phrase we use in English to describe something very flat indeed.

象煎饼一样平，一个很常用的英文表达，描述一样东西特别的平整。

youdao

The folder structure for the sample DITA project is very flat, with directories for cases and pages.

样例DITA项目的文件夹结构非常直截了当，带有用例和页面的目录。

youdao

We live in a small, fairly dark, but very nice basement flat

我们住在一个小的，光线很暗的，但是很漂亮的地下室公寓。

房价非常高 - SpeakingMax英语口语达人

Windows Phone and the forthcoming Windows 8 interface, for example, use a very flat tile-like metaphor.

FORBES: Thanks Buttons. Touch, Speech and Gesture Can Take it From Here

The take-up of loans by companies remains flatter than a very flat pancake.

BBC: Can banks be forced to lend more?

Wearing shoes with very flat or very high heels can worsen the problem.

CNN: Why your feet hurt