Polyacetylene
聚乙炔
🗣️ 情景例句
Robbie will bring the ties back. Robbie
会拿领结回来。
We should make it clear whether the damage was caused in transit or during the unloading process, or by other reasons.
我们要弄清楚货物是否在运输途中受损，还是在卸货过程中受损，或者别的原因。
Yes, you are.
对，你也是。