Monocentric integral
[化] 单中心积分
🧩 词语组成解析
🗣️ 情景例句
I'm sorry, I can't help you. I'm just a tourist also.
很抱歉，我帮不了你，我也只是个游客。
Be swift to hear, slow to speak.
多听少说。
And, because most books were not printed in Braille.
因为大多数的书本没用布莱叶文印刷。