Pentafluorination
五氟化反应
🗣️ 情景例句
about our children's education.
对于我们孩子的教育。
What you have said about this is very interesting.
你说的很有意思。
There is a zoo, an art museum, a boating lake, a smaller lake for model boats and, in winter, an ice-skating area.
还有一个动物园、一座艺术博物馆，一个供人划船用的湖。另有一个比较小的湖，供人们玩模型船艇，冬天就成为滑冰场。