Oleorefractometer
油折射计
🗣️ 情景例句
You mean you never do anything yourself?
你意思是你自己不做任何事？
The doctor said it's just a slight infection, There's nothing to worry about.
医生说只是轻微的感染，不需要担心。
There, a child grows up under the ever-present attention of his parents;
荒凉地区的孩子无时无刻不在父母关怀下成长。