Polyyne
聚炔烃
🗣️ 情景例句
The only other sound's the sweep
徐风掠过和细雪纷飞
What do you want to be after school?
当你完成学业以后，你要做什么？
Can she type this letter for me?Ask her please.
她能为我打一下这封信吗？请问她。