Backfills
回填（挖掘的洞穴）( backfill的第三人称单数 )
🗣️ 情景例句
You cannot believe how sorry I am.
你不知道我感到多么抱歉。
Men may meet but mountains never.
人生何处不相逢。
Then he spoke slowly, but I could not understand him.
于是他说得慢了，可我还是听不懂。