Piperidine
n. [化]哌啶,氮杂环己烷
🗣️ 情景例句
Don't park your car in a dark street.
不要把车停在黑暗的街道上。
Whatever is worth doing at all is worth doing well.
凡是值得做的事，就值得做好。
He speaks some Chinese, but not much.
他讲点汉语，但是不多。