And then this one, we had bf, and now we've got gf.

然，我们有了男朋友/最好的朋友，现在我们有了女朋友。

Dai Kang, managing director of the development research center at GF Securities, said private equity investment funds have increased their exposure to the A-share market, which has just seen the strongest rebound in months.

广发证券发展研究中心董事总经理戴康表示，私募股权投资基金大了对A股市场的投入，A股市场刚刚经历了数月来最强劲的反弹。

Vulnerable to being swept away is hardly an ideal approach to tracking impending floods But Michael Dietz of GF-Z the German research center for geosciences.

容易被冲走绝不是追踪即将来临的洪水的理想方法，德国地质研究中心的迈克尔·迪茨表示。

What do you mean by that, GF?

你说的GF是什么意思？

So let's write these key points out about gravitational forces, which I'm going to use GF to represent.

那么让我们写下关于引力的些要点，我将用 GF 来表示。