Vacant channel
[计] 空余信道
🧩 词语组成解析
🗣️ 情景例句
No, …is not in right now. May I take a message?
不， ……现在不在这儿。 我能帮你捎个口信吗？
If he wants to make any changes,minor alternations can be made then.
如果他有什么意见的话，我们还可以对计划稍加修改。
From the shore line, out to a distance which may be anywhere from a few miles to a few hundred miles,
从海岸线向大海延伸几英里到几百英里的区域是大陆架慢坡，