There is usually a good deal of turnover in species composition, even in a mature community.

即使在一个成熟的群落中，物种组成通常也有很大的变化。

youdao

He never wrote me off as a good, mature kid who could handle everything herself.

他从没把我当成一个可以应付所有事情的成熟的孩子。

youdao

But people change, mature, grow up. Eventually Jobs became a good father.

但是人是会变的，随着成长人会变得慢慢成熟，最终乔布斯成为了一个很棒的父亲。

youdao

The hope is that investors can be persuaded to hold the assets to maturity, which, for some, means until next December, and that they will all mature in good standing.

FORBES: Florida Fund Meltdown: Bad To Worse

The second, and relevant, case is a mature company that is doing a really good job in a very specific B2C field.

FORBES: The Start-Up Nation Must Grow Up

California argued that the voluntary system isn't good enough, because some minors manage to purchase mature-rated games anyway, and some publishers don't submit games to the ratings board.

WSJ: High Court Strikes Down California Videogame Law