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1·He admired her courage and constancy.

他钦佩她的勇气和忠贞。《牛津词典》

2·We live in a world without constancy.

我们生活在一个不断变化的世界。《柯林斯英汉双解大词典》

3·Mandelbrot, who did the experiment with stock exchanges prices, for example, noted that although the outcomes were variable, there were, in fact, certain constancy.

例如，做过股票交易所价格实验的曼德尔布洛特指出，尽管结果是可变的，但实际上存在一定的一致性。

4·The pine is a badge of constancy.

松树是节操的象征。

5·All love can be love conquer of constancy.

所有的爱都可被忠贞不渝的爱情征服。

6·The secret of success is constancy to purpose.

成功的秘诀是坚定的目标。

7·The secret of success is constancy to purpose.

成功的奥秘在于坚持不懈地奔向目标。

8·The secret of success is the constancy of purpose.

成功的秘诀乃志向不变。

9·Neither constancy nor relentless change will support a creation.

恒久不变和无情的变化都无益于创造。

10·While we do like change, we also need a sense of constancy.

虽然我们的确喜欢变化，但我们也需要一种恒常不变的感受。

(1)color constancy色彩恒常性；色感一致性