Thalweg
最深谷底线
🔁 扩展释义
【法】 航道分界线
🗣️ 情景例句
This is fun. It's a piece of cake.
有意思 毫不费力。
I used to wake up early and get up at 7 o'clock.
我过去常早醒来并且在7点钟起床。
Hello, Jim! How are you?
吉姆，你好吗？