Oxidationpromotor
[化] 氧化促进剂
🗣️ 情景例句
And have you had an engineer come in to do an inspection?
你们可有一个工程师来做过检查吗？
Wisdom is a good purchase though we pay dear for it .
为了求知识，代价虽高也值得。
What are their jobs?
他们是做什么工作的？