A2
[医] 主动脉第二声
🗣️ 情景例句
The truth is, I am.
事实上， 我的确如此。
He often plays cards.
他常常玩扑克牌。
Early next morning, she heard planes passing overhead and wondered how she could send a signal.
第二天一大早，她听到头顶上有飞机飞过，但不知道怎样才能发个信号。