As the number of moisture droplets increases, they begin to coalesce into small rivulets of fluid.

当水滴数量增加，它们会汇集成细流。

《柯林斯英汉双解大词典》

Razor minimizes the number of characters and keystrokes required when writing a view template, and enables a fast, fluid coding workflow.

Razor尽量减少编写一个视图模板需要敲入的字符数，实现快速流畅的编程工作流。

youdao

Fluid dynamics has a number of applications, from the bizarre to the mundane.

流体力学有着非常多的应用，从奇形怪状的到平淡的。

youdao

The situation has been consistently labeled as fluid, given the rapid number of new occurrences.

FORBES: Libyan Rebels Breach Gadhafi Compound And Raid His Residence

Mrs Clinton said Algerian Prime Minister Abdelmalek Sellal had told her on Friday that the "operation was still ongoing, that the situation remained fluid, that the hostages remain in danger in a number of instances".

BBC: Algeria siege: Hostage nations concerned over situation