Penetrations
n. 渗透( penetration的复数形式 ); 穿透; <军>突破; （男人阴茎的）插入
🗣️ 情景例句
It has been a learning experience. That's true.
这真是一次学习经验， 真的。
To teeter-totter
玩跷跷板
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。