Vacant channel
[计] 空余信道
🧩 词语组成解析
🗣️ 情景例句
I know what you mean. I'v been there.
我明白你的意思。 我深有体会。
March comes in like a lion and goes out like a lamb.
三月来如雄狮，去如绵羊。
After switching on powerful arc lights, they saw great stalagmites -- some of them over forty feet high -- rising up like tree-trunks to meet the stalactites suspended from the roof.
他们打开强力弧光灯，看见一株株巨大的石笋，有的高达40英尺，像树干似地向上长着，与洞顶悬挂下来的钟乳石相接。