I became mature and sensible.

我变得成熟与懂事了。

youdao

As I reflected on ET + +, it became apparent that a mature framework contains recurring design structures that give you properties like extensibility, decoupling, and last but not least, elegance.

我从et++中学到，一个成熟的框架总是明显地包含了很多重复出现的设计模式，可以让你得到更多的东西，像扩展性，解耦性，和最终的优雅性。

youdao

I felt like I was growing up, I became more mature and I would be a high school student soon.

我觉得自己长大了，我变得更加的成熟，很快就要成为一名高中生了。

youdao