That's why they've created this room where they've successfully tricked corals into thinking it's their spawning season which usually happens only once a year.

这就是他们开辟了这个房间的原因，在这个房间里，科学家成功地欺骗了珊瑚，让它们认为现在是珊瑚的产卵季节，而珊瑚通常一年只产卵一次。