Polyacetylenes
多炔
🗣️ 情景例句
What? Tell me.
什么事？ 说给我听听。
May I use the telephone?
我能用一下电话吗？
The girl, tears streaming down her face, begged to be allowed to slip into the guard's van.
女孩泪流满面，央求让她不声不响地到押车员车厢里去算了。