🗣️ 情景例句
But your L C must reach us 30 days before delivery.
但交货前30天，我们必须要收到你们的信用证。
See you tomorrow.
明天见。
To protect themselves from the icy water, they had to wear special rubber suits.
湖水冰冷刺骨，他们必须穿上一种特制的橡皮服以保护自己。