Manutex
藻酸钠
🗣️ 情景例句
What's the matter, Susan?
怎么了， Susan？
He equipped all his children with a good education.
他使所有的子女都受到良好的教育。
He came out of the library, a large book under his arm.
他夹着本厚书，走出了图书馆。