【It probably has somehting to do with the fact 】

问题补充：

It probably has somehting to do with the fact that nicotine is appetite suppressant and appears to up your metabolic rate.请问这里的词可以理解为:appear to:似乎?up 增长?是分开的吗?

答案：

是分开的,似乎增强了你的新陈代谢速率