Penna
n. [鸟]廓羽
🗣️ 情景例句
Well, what's going on?
噢， 怎么啦？
I hope he will meet me at the airport.
我希望他能到机场接我。
it was not long before its use as the uniquely recognizable broadcasting frequency for interstellar communication was suggested.
提出把它作为星际间唯一可辨认的广播频率就为期不远了。