Supply many different patterns : water drop shape(tumbler shape)is most steady in torrent;

有不同形状浮体可选择：水滴形（不倒翁形）在急流中更稳定；

youdao

youdao

The shape of this amazing fishbowl was inspired by a water drop which was ready to flow over the edge of the surface it was resting on.

这个样貌奇特的鱼缸的设计灵感，来自于一滴即将从它正停留表面滑落的水珠。

youdao

As a result, he seems to have discovered the size and shape of the smallest possible drop of water.

ECONOMIST: Molecular bonding