Two small pouches, placed in the bottom of a shoe, are filled with the fluid and generate a current whenever they are compressed by the foot’s up and down motion.

当他们将两个装有该流体的小袋子置于鞋内时，它们就会因人脚抬升和下落的动作而受到挤压，从而产生电流。

youdao

It's the first known superfluid, a fluid that has many interesting properties, including absolutely no viscosity, and it will never come to rest or lose energy once you start it in motion!

它是人类知道的第一种超流体——这种液体有一些很有趣的特性，包括完全没有粘滞性，一旦你让它动起来，便永无歇止，并且不会损失能量。

youdao

Every step he took was absolutely precise and fluid at the same time. It was like watching quicksilver in motion.

他的每一个舞步都是那么的准确流流畅，就如同倾泻的水银一般。

youdao

She left the car in one fluid motion, not even pausing to push the locking button on her security key, and entered the school and walked urgently down the hall, past the display of photographs of "Astronaut Moms and Dads" grinning in their orange pressure suits as they held up models of the space shuttle.

NPR: In 'Challenger Park,' Mom Is an Astronaut

If one of these spent shells is in the chamber, racking the slide will, in a single fluid motion, eject the old shell out the side of the gun and push a fresh round into the chamber.

NEWYORKER: A Loaded Gun

The exhibition Zaha Hadid: Form in Motion at the Philadelphia Museum of Art, full of her biomorphic, fluid product design, is an apt descriptor of Hadid herself: Dynamic, unapologetic and utterly fearless.

FORBES: Why Being Fearless Matters So Much: A Conversation With Zaha Hadid