Subfluoride
低氟化物, 氟化低价物
🗣️ 情景例句
I think you should show it to Mr. Carlson.
我觉得你应该给Carlson先生看看。
Pain past is pleasure.
过去的痛苦即是快乐。
They disregard social conventions without being conscious that they are doing anything extraordinary.
他们不顾社会习俗，意识不到自己所作所为有什么特殊之处。