You are not really happy, your smile is your protective color.
你不是真正的快乐，你的笑是你穿的保护色。
The body color of the white bear is a protective color, whatever enemies are difficult to find it.
白熊的体色是一种极好的保护色，无论什么敌害，都难以找到它的踪影。
Its ruby color may be a protective measure, signaling potential predators that it is toxic.
它的红宝石色彩可能是一种保护办法，发信号给潜在的食肉动物它是有毒的。
Its ruby color may be a protective measure, signaling potential predators that it is toxic.
它的红宝石色彩可能是一种保护办法，发信号给潜在的食肉动物它是有毒的。
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