We actually make people slip and fall,researcher Mark Redfern said.
We actually make people slip and fall,researcher Mark Redfern said.
研究人员马克·雷德费恩说：“其实是我们让人们滑倒的。”
We actually make people slip and fall,researcher Mark Redfern said.
研究人员马克·雷德费恩说：“其实是我们让人们滑倒的。”