The key materials are: Black and white reconstituted stone, stretch ceiling light box, tinted laminated glass, rainbow tinted acrylic, composite aluminium panels and glass Reinforced Gypsum board.

主要的材料为：黑色与白色合成石，拉膜灯箱，彩色夹胶玻璃，彩虹亚克力板，铝板，高强石膏板等。

youdao

After a minute's weaving about through the whirl of rainbow feathers, he noticed a large silver key that had a bent wing, as if it had already been caught and stuffed roughly into the keyhole.

他在五彩缤纷的小翅膀的漩涡中穿行了一分钟，就注意到一把大大的银钥匙的翅膀耷拉着，就好像它曾经被人抓住、粗暴地塞进了钥匙孔里。

youdao

Kolodgy recommends using a "token, " another type of device based on flash memory that functions as a key, made by companies such as Rainbow Technologies.

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