axial shoot

例句：

1. 1. The plant's axial shoot is growing quickly.
   植物的轴向生长迅速。
2. 2. The axial shoot of the tree is visible from far away.
   树的轴向生长从远处就能看到。
3. 3.The scientist observed the axial shoots of the plant during the experiment.
   科学家在实验中观察了植物的轴向生长。