Biellipticity
双椭圆率
🗣️ 情景例句
Oh my!
噢 ，我的天！
I wonder what makes you late.
我不知道是什么使你迟到。
Ships may be delayed by storms; flights may be cancelled because of bad weather, but trains must be on time.
轮船船期可能因风暴而推延，飞机航班可能因恶劣天气而取消，唯有火车必然是准点的。