translation.en: Now for those who don't believe this argument, we have trees and grass on our planet without the brain, but the clinching evidence is this animal here -- the humble sea squirt.
translation.zh: 如果有谁不相信这个说法 我可以举例说不会运动的树和草都没有大脑 不过有一种动物提供了确凿的证据-- 不起眼的海鞘