你也需要如此一个黑盒子来向你的朋友们展示。

All you really need to house such schoolchild-friendly exhibits is a big windowless black box.

youdao

你也需要如此一个黑盒子来向你的朋友们展示。

All you really need to house such schoolchild-friendly exhibits is a big windowless black box.

youdao