Heptyne
庚炔 1-heptyne 1-庚炔
🗣️ 情景例句
You're right, Robbie.
你说得对 ，Robbie。
We'll sign two originals, each in Chinese and English language.
我们将要用中文和英语分别签署两份原件。
The idea of colonising Mars---- a world 160 times more distant than the Moon----
征服火星的计划-一个比月球远160倍的星球