Pippip
interj. 再见, 喇叭嘟嘟声
🗣️ 情景例句
to work with Dad towards solving that problem?
和爸爸一起来解决这个问题怎么样？
I didn't catch that, Could you go over that again?
我没有听清楚，请你再说明一下好吗？
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，