Bisecant
二度割线
🗣️ 情景例句
Fine. Good-bye.
好的，再见。
Would you like to leave a message?
你想留下一条消息吗？
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。