The " bread" of this butty is a pair of layers, top and bottom, of titanium dioxide, each three nanometres thick.

治两片“”二氧化钛，上下各有一层，每层有纳米厚。

The only thing that comes to mind is a chip butty, which is a sandwich made with fries inside and guess what?

唯一想到薯片治，这一种里有薯条治，你猜怎么着？

In the Midlands, it would be a bap, or we'd probably call it a roll. - A roll. A barm. A butty. - A cob.

在英格兰中部中，它会叫做软，或者我们可能会叫它小圆。- 小圆。酵母。治。- 圆。