Background impurity
[化] 本底杂质
🧩 词语组成解析
🗣️ 情景例句
I was in the neighborhood, so I thought I'd stop by.
我就住在附近，所以我想拜访一下。
Do you like skiing?
你喜欢滑雪？
Yes, our market analysis tells us our prime user will be between 40 and 60.
好的，我们的市场分析告诉我们，我们产品主要的使用者年龄将在40至60岁。