When finally the basin of water has sunk from the bowl to the cistern pipes, where does the form of the whirlpool go?

最后，满盆水都从槽里排到下水道，那么漩涡的模式到哪去了呢？

youdao

When finally the basin of water has sunk from the bowl to the cistern pipes, where does the form of the whirlpool go?

最后，满盆水都从槽里排到下水道，那么漩涡的模式到哪去了呢？

youdao