Actinomorphy
辐射对称
🗣️ 情景例句
Well, before I go to college,
嗯，在我进大学之前，
Your niece is engaged,isn't she?
你的侄女订婚了，是吗？
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。