Stonefalls
(stonefall 的复数) [体]滚石
🗣️ 情景例句
As a matter of fact,
事实上，
He came to give us a talk yesterday.
他昨天给我们作了一次演讲。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，