1.You're walking a fine line here.你现在很背(倒霉,行差答错,总是会碰到危险的事) 2.Mostly I just wanted to mention how smoothly things have been running. 一般说来万事还算如意.3.In his first class he ran over a dog.上第一节课时他就撞上一条狗. 4.We're talking about one tiny, reckless little dog here. 我们在说一条小小的冒失狗.5.Tough break.真倒霉!