Chromosorb
红色硅藻土色谱载体
🗣️ 情景例句
Do you need anything particularly?
是不是买一些别的东西？
Please make an appointment with my secretary.
请跟我秘书定个见面时间。
Babies of two months old do not appear to be reluctant to enter the water.
两个月的婴儿并未显得不愿意入水。