Propyne
n. [化]丙炔
🗣️ 情景例句
I was so tired
我太累了
Don't whistle until you are out of the wood.
没有脱离险境，不要过早高兴。
It was necessary, therefore, to invent instruments that neither slumbered nor slept.
因此，有必要发明一种仪器，既不打盹儿，也不睡觉。