Elytrum
n. 翅鞘, 翅基
✅ 同义词
🗣️ 情景例句
I've got it. This one's on me.
我都付了。这一顿我请客。
I must be off soon.
我很快就得走了。
An ocean wave passing through deep water causes a particle on the surface to move in a roughly circular orbit,
穿过深水的海浪使水面上的一个微粒按照一种近乎圆形的轨道移动，