Signalling apparatus
[机] 信号装置
🧩 词语组成解析
[计] 信号传输法
🗣️ 情景例句
That's very nice of you. Where did you get it? It's not a print.
真细心！你从哪儿弄来的？这还不是复制的呢！
What do you mean? not at all!
哪有？
No necessity of making a living away from home results in neglect of children,
人们没有必要离家谋生，所以不会产生孩子无人管的问题，