Rvr
心室重复反应
🗣️ 情景例句
There is an emergency. Please send a fire engine.
这有火灾，请尽快派消防车来。
Mountain-climbing is difficult.
登山是困难的事。
Both men had hardly had time to realize what was happening when they were thrown violently into the sea.
他们两个还没来得及意识到究竟发生了什么事情，就被猛地抛入了海里。