B: Two hours.That area is a little backward.

两个小时。那地方有点团塞。

youdao

The negatively sloped portion of a supply curve like that in Figure 5.1(b) is frequently referred to as a "backward-bending" supply curve;

图5.1（b）中的供给曲线的负斜率部分就是通常所谓的“向后弯曲”的供给曲线；

youdao

But it's backward-compatible with the B standard, meaning that a router or other access point that uses the G standard can also support a notebook outfitted for the B standard, but only at the slower speed.

FORBES: Magazine Article

Moreover, as I think you know, plan B represents -- or would represent a major step backward in these discussions and a major step backward for the American people.

WHITEHOUSE: Press Briefing