Pentafluorization
五氟化反应
🗣️ 情景例句
Because my birthday is tomorrow.
因为明天是我的生日。
I asked you if you wanted some help.
我是问你是否需要帮忙。
He was rather elderly with grey hair and clear blue eyes.
他上了年纪，有着灰白的头发和明亮的蓝眼睛。