Bonus experiment: Stand your friend in the shade and pop up your flash!

额外试验：让你的朋友站在阴影里然后打开闪光灯试试！

youdao

Bonus experiment: Stand your friend in the shade and pop up your flash!

额外试验：让你的朋友站在阴影里然后打开闪光灯试试！

youdao