Canvasback
n. (产于北美的)帆布潜鸭(因其背羽呈帆布色而得名)
🗣️ 情景例句
Do you have any plans after class today?
今天下课后你有什么安排吗？
Sometimes gain is to lose.
有时得即是失。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。