Oleorefractometer
油折射计
🗣️ 情景例句
What was your speciality?
你学的是什么专业？
He is now out of touch with his old friends.
他现在已经没有和他过去的朋友联系了。
but of accumulated knowledge applied to practical life.
而是积累起来的知识应用到实际生活中的结果。