Pentafluorization
五氟化反应
🗣️ 情景例句
Who's your favorite celebrith?
你最崇拜的名人是谁？
He spends a lot of time reading books on ecology.
他花了大量的时间阅读生态学方面的书籍。
Aunt Harriet presided over an invisible army of servants that continuously scrubbed, cleaned, and polished.
哈丽特姑妈统率着一支看不见的佣人大军，他们不停地擦拭、清扫、刷洗。