Ept
[化] 三元乙丙橡胶; 乙丙三元橡胶
🗣️ 情景例句
What's the deadline for claim?
索赔的有效期多长？
I don't know how to work the machine.
我不懂得怎样使这部机器运转。
The most valuable find of all was the ship's log book, parts of which it was still possible to read.
打捞到的东西中最有价值的是船上的航海日志，其中有一部分仍然清晰可读。