Acetyloxide
氧化乙酰, 醋(乙)酐
🗣️ 情景例句
What's the deadline for claim?
索赔的有效期多长？
Many hands make light (or quick) work.
人多活儿轻。
Last year was a bad year for the company. There was a big fall in sales.
去年公司不景气。销售额骤减。