Polyacetylen
聚乙炔; 聚乙炔
🗣️ 情景例句
The darkest evening of the year.
在这一年中最漆黑的夜晚 。
I don't blame you for doing that.
我不责备你做了那件事。
a moment later, he ran after me and thrust the pen into my hands.
一会儿，他突然从后追了上来，把笔塞到我手里。