Levair
磷酸铝、钾、钠盐
🗣️ 情景例句
Would two o'clock be acceptable?
两点钟合适吗？
Our clients are very critical on quality.
我们的客户对商品的质量是很挑剔的。
He always meant to go back on day, but not to stay.
他总想将来回国看看，但却不愿长期住下去，