It's made from flexible proteins called crystallin.

由有弹力水晶体蛋白构成。

Now there are more pants with stretchy waistbands on the Stitch Fix website than buttons or zippers.

如今，在Stitch Fix网站上，有弹力腰带子比有纽扣或拉链子还要多。

Have you ever used those stretchy jeans that Origin makes?

你用过Origin品牌那种有弹力牛？

And because it had a springy, like a rim, i would dunk it and it would chew right back into my face.

因为边缘是有弹力 我扣篮之后会弹回我脸上。