壮年期

xiàn zài wǒ zhèng gāng gāng bù rù zhuàng nián qī

现在我正刚刚步入壮年期。

I'm just coming into my prime now.

zhuàng nián qī shì pén dì yǎn huà de dìng xíng jiē duàn

壮年期是盆地演化的定型阶段。

The maturity period is the formative stage of basin evolution.