Asteroidea
[医] 海星纲
🗣️ 情景例句
I really mean it.
当然是真的。
There is no royal road to learning.
治学无坦途。
If the feeding place was away from the sun, the straight part of the wagging dance pointed downward.
如果喂食地点向着太阳，跳舞的蜜蜂在跳摇摆舞时直线部分就一直向上。