He made an "average face" image of himself using 20 different images.

他用20张不同的图片做了一张自己“平均脸”照片。

youdao

Biden, a senator from Delaware, also argued that McCain is "profoundly out of touch" with the issues that average Americans face.

CNN: Palin vows to shake things up; Biden blasts GOP call for change

Tall buildings, walkable neighborhoods, and a good transit system reduce the average cost of face-to-face interaction in exactly the same way that steam ships and low tariffs reduced the average costs of shipping goods to the other side of the world.

FORBES: Density Limits Are Urban Protectionism

Almost half of U.S. agricultural goods, which currently face average tariffs of 15 percent, will immediately become duty-free.

WHITEHOUSE: Our Top Stories