Chromosorb
红色硅藻土色谱载体
🗣️ 情景例句
A murder occurred last night in this very district.
就在这个区昨晚发生了一起凶杀案。
It's out of the question.
这是不可能的。
The man lay on the road. Luckly, he was not badly hurt. But he could not move.
他躺在路上。幸好他伤得不重。但他不能动。