Xrf
abbr. X-ray fluorescence X射线荧光
🗣️ 情景例句
I hope that someday maybe you'll be able to visit my family in Beijing.
我希望将来有一天，你可以来北京到我家里作客。
What did you do the week before last?
上上星期你干了什么？
The man was ordered to pay $3,500 for the cost of the trip.
此人被责令交付旅费3，500英镑，