Anakrom
硅藻土型色谱载体
🗣️ 情景例句
He is a leader in his field.
他是他行业的领导者。
Oh, that's not good.
哦，那可不好。
Yes, our market analysis tells us our prime user will be between 40 and 60.
好的，我们的市场分析告诉我们，我们产品主要的使用者年龄将在40至60岁。