复数： variations

Each variation poses enormous design , engineering and technological challenges .

每一个变化都是对设计、工程及技术的巨大的挑战。

Genetic analyses spotted one gene variation common to them both .

遗传分析找出了她们身上共有的一种变异基因。

What shone through the study was the variation among teachers .

这项研究的闪光点是教师的差异。

Rondo form and variation form were often blended with sonata form .

回旋曲式和变奏曲式就经常与奏鸣曲式混搭。

We can observe another variation of the conservation of catastrophe in the construction of medieval cathedrals .

在中世纪教堂的结构中，我们可以观察到灾难留存的另一个变种。