impurity
n
1 [U] state orquality of being impure 不纯; 不洁; 淫秽.
2 [C] substancepresent in another substance that makes it of poor quality 杂质
remove impurities from silver 去除银中的杂质.
🔁 扩展释义
*[im'pjuәriti]n. 杂质, 不洁, 不纯【化】 杂质【医】 不纯, 杂质
🏥 医学释义
不纯,杂质
🌿 同词根单词
importn. 进口,进口商品;输入;重要性;意义;
vt. 输入,进口;对…有重大关系;意味着;
vi. 具重要性;
The World Trade Center, an office building for over 1200 firms employing about 50,000 people, is even higher at 411 metres.
世界贸易中心要高得多,有411米。它是一座办公大楼,楼里有1,200多家公司,大约有5万雇员。
Next, if it is not a story, get an idea of the organization of the book. Read the back cover and the introduction. Look at the pictures and the short texts below them. Turn to the front of the book and look at the contents. This way you can decide whether