Tne
[医][=tris sodium chloride EDTA buffer]三羟甲基氨基甲烷氯化钠EDTA缓冲剂
🗣️ 情景例句
How long are you going to stay here?
您在这里呆多久？
Do you ever do exercises on Saturday?
你曾经在星期六做练习吗？
Oh, do you have to?
噢，你们一定得走吗？