Limit of impurities
[化] 杂质极限; 杂质限度
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
n. 杂质（impurity的复数）
🗣️ 情景例句
Are all these goods made in your factory?
所有这些货物都是贵厂生产的吗？
Which is your bag?
哪个是你的包？
I could not catch your question. Could you repeat it, please?
我没听清楚你们的问题，你能重复一次吗？