n.（下）胚轴

The hypocotyl of the seedling has just emerged from the soil.
幼苗的茎基刚刚从土里钻出来。
The seed's hypocotyl will elongate rapidly during germination.
种子的茎基在发芽过程中会迅速伸长。
The botanical structure of the hypocotyl is distinct from the radicle.
茎基的植物学结构与胚根有明显区别。
The hypocotyl supports the shoot until it can stand on its own.
茎基在幼苗能够自立前支撑着主干。
In some species, the hypocotyl forms a specialized structure called a coleoptile.
在某些物种中，茎基发展成一种特殊结构——鞘管。
The hypocotyl's function is to anchor the seedling and absorb nutrients.
茎基的作用是固定幼苗并吸收养分。
During seed dormancy, the hypocotyl remains dormant as well.
在休眠期，种子和其茎基都会保持休眠状态。
The length of the hypocotyl varies among different plant genera.
不同植物种类的茎基长度各不相同。
Botanists study the hypocotyl to understand plant development.
植物学家研究茎基以理解植物的生长发育。
The breaking of the hypocotyl marks the transition from seedling to sapling.
茎基断裂标志着幼苗向小树的转变。