已知的彩色海参类动物超过了3000多种，而且几乎每一天就可以发现一些新品种。

There are over 3,000 known species of these colorful sea slug relatives and new ones are discovered nearly every day.

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在那里有着3 000多种的、已知的彩色的海参类动物，几乎每一天就可以发现一些新品种。

There are over 3, 000 known species of these colorful sea slug relatives, and new ones are discovered nearly every day.

youdao