Heptyne
庚炔 1-heptyne 1-庚炔
🗣️ 情景例句
Take it side again .... OK, and switch. Stretch it out.
再侧身……好 左右交替。尽量伸展。
Newspapers inform us of daily events.
报纸把每天发生的事都告诉了我们。
Annie was born in a poor family, on April 4th, 1866.
1866年4月4日，安妮出生在一个贫苦家庭中。