1、In mathematics, a sequence is said to be convergent if it approaches a specific limit as the terms of the sequence become increasingly larger.

数学上，如果一个数列随着项数的增加逐渐接近一个特定的极限，那么它被称为是收敛的。

2、The convergent evolution of wings in birds and bats is a fascinating example of how different species can develop similar adaptations to suit their needs.

鸟类和蝙蝠中翅膀的收敛进化是一个有趣的例子，展示了不同物种如何在适应环境需求方面发展出类似的适应性特征。