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
But I'm sure he has a few bags with him on the train.
不过我相信他在火车上还有几件行李的。
What's your nationality?Are you a Chinese?
你的国籍是什么？你是中国人?
But you will get less waste from this.
但可以减少浪费。