生长期的英文：
growing period
growth period
period of growth

It also varies according to elevation above sea level: higher elevations tend to have shorter growing seasons.
生长期还随海拔高低而变化，海拔愈高生长期愈短。

Growing children should absorb nutrition to strengthen physical function and promote metabolism.
儿童生长期应注意摄入营养，这样能使他们增强身体机能，促进新陈代谢。

They grow cotton of long staple.
他们种植长纤维棉花。

Ill weeds grow apace.
野草长得快。

Friendship the older it grows the stronger it is
友谊地久天长

juvenile period
幼年期(构成中心木质部的一段时期)

But this is a transitional period.
但这是个转变过程。

The period includes the legal period and the period designated by the people's court.
期间包括法定期间和人民法院指定的期间。

spontaneous growth of willow
柳树的自然生长

They all need food for growth.
他们全部需要养料来生长。

It can affect growth and development.
它会影响生长和发育。