Vacant channel
[计] 空余信道
🧩 词语组成解析
🗣️ 情景例句
Smoking sucks!
吸烟太糟了。
Learning is better than house and land.
学问是一生的财富。
Dan wondered why he was wanted by the police, but he went to the station yesterday and now he is not worried anymore.
丹奇怪警察为什么找他，但昨天还是去了，结果他一再担心了。