Fluoram
二氟化铵
🗣️ 情景例句
And these are pictures of people working:steelworkers, bankers, police, street vendors,ambulance drivers, doctors….
这是工作中人们的照片：钢架工人、 银行职员、警察、街头小贩、救护车驾驶 医生等等……
Morning, How are you?
早，你好吗？
We have got quite used to them.
对这些，我们已经司空见惯了。