variations
n. 变奏曲，变更；变种（variation的复数形式）
参考例子
1.They are variations of buttons.
它们是按钮的变种。
2.Do you have two color variations of black and silver for two different models ?
你有二个彩色变化吗黑色的和银对于二个不同的模型?
3.The variations are usually random and chaotic, but there is occasionally order within the chaos.
这些变化通常是随机而混乱的，但偶尔可在混乱中发现一些秩序。
网络释义
Variations
变化; 变奏曲; 比赛规则的改变; 额外工作;
variations equation
变分方程;
GREENSLEEVES VARIATIONS
绿袖子变奏曲;
Sinusoidal variations
正弦变量;
diurnal variations
日变化;