重点讲解：
1. contrary to 与…相反；
Contrary to popular belief, moderate exercise actually decreases your appetite.
与通常的看法相反，适度的运动事实上会降低食欲@)^q*Df1l)VTcXL。
2. no doubt 无疑地；必定；
They would no doubt welcome the action with open arms.
他们无疑将热烈欢迎这一举动~1vUaAnwmp))4rx^。
3. write down 写下；记下；
On the morning before starting the fast, write down your starting weight.
早晨开始禁食前，记下你的体重jc6Xr6.h!StF。
4. fly in the face of 完全违背；与(公认的观念或规则)相冲突；
Such a proposal is flying in the face of common sense.
这个建议违反常识+lkp=vZj@2IR。