Sepcete
薄膜型液相色谱填充剂
🗣️ 情景例句
How are you?
你好吗？
Rose, let me introduce my friend to you.
罗斯，让我介绍一下我的朋友。
Before returning home at night.He took a shower and changed back into his suit.
晚上回家前，他洗个淋浴，重新换上那身黑色西服。