mature

For a twelve-year-old, he is very mature and can take care of his younger siblings.

(Chinese) 对于一个十二岁的孩子来说，他非常成熟，能够照顾年幼的弟妹。

The teacher praised the students for their mature handling of the sensitive debate topic.

(Chinese) 老师表扬了学生们对敏感辩论话题的成熟处理方式。

A mature female elephant can weigh up to three thousand kilograms.

(Chinese) 一只成年（发育完全的）雌象体重可达三千公斤。

The wine has reached a mature stage and is now ready to be served.

(Chinese) 这款酒已经达到了成熟阶段，现在可以饮用了。

As she matured into a young woman, she became more confident in her public speaking.

(Chinese) 随着她成熟为一名年轻女性，她在公开演讲时变得更加自信了。

Solar power technology has matured significantly over the past twenty years, becoming much cheaper.

(Chinese) 太阳能技术在过去二十年里显著成熟，变得便宜得多。