Monotonic function
[计] 单调函数
🧩 词语组成解析
a. 单调的
🗣️ 情景例句
You must develop the muscles of your speech organs to produce unfamiliar sounds.
所以你必须训练和发展你的发音器官（声带、舌、口、鼻腔等）的肌肉，以便发出陌生的（另外一种语言）声音。
It's been a long time.
好久不见了。
'I can't hear a word!' I said angrily.
“我一个字也听不见了！”