Fluorion
氟离子
🗣️ 情景例句
Dad was a busy doctor,
爸爸是个很忙的医生，
I'm impressed by your approach to business.
你们经营业务的方法给我留下了很深的印象。
So archaeologists have neither history nor legends to help them to find out where the first 'modern men' came from.
于是，考古学家们既缺乏历史记载，又无口头传说来帮助他们弄清最早的“现代人”是从哪里来的。