Instead, I just close my gill flaps and start hoovering everything in sight.

相反，我只是合鳃盖，开始器一样把眼前的一切都进来。

Well if you think about that, once we have this operculum right here, if you close that operculum then we can have essentially the evolution of lungs coming from that.

那么，如果你考虑这一点， 一旦我们有了这个鳃盖，如果你关闭这个鳃盖， 那么我们实以看肺从这里进化而来。

In other words as water moves through the mouth and out the operculum, it's not enclosed because it's just sitting in water.

换句话说， 当水通过鱼嘴进入并从鳃盖流出时，它并不是封闭的， 因为它只是处于水中。

Well this right here is the operculum of a fish.

这个就是鱼的鳃盖。