Some word experts say the expression to frame someone comes from the way wood must be fitted closely around a painting or photograph to frame it.

VOA: special.2010.02.21

It's not going to be a backscatter event if your ping-pong ball hits the frame or these strings, or the top part.

打到原子核了就是背散射,如果打到框上。

麻省理工公开课 - 化学原理课程节选

If you wanted to have a real frame, then you would index to the consumer price index or some other inflation index.

如果你想以实物框架理念来看的话，你就得将消费物价指数或者,其它通胀指数考虑在内。

耶鲁公开课 - 金融市场课程节选