Klein bottle
[数] 克莱因瓶
🧩 词语组成解析
n. 克莱因（男子名）
🗣️ 情景例句
You're writing a book?
你在写一本书吗?
A clear conscience is a soft pillow.
问心无愧，高枕无忧。
Settlers made agreements with Native American cheifs but always broke them afterwards.
殖民者同美洲土著人的首领达成了协议，但是这些协议随后总是被撕毁。