Hair of the dog:
狗的毛发 ×
醒酒液 √
例句：
I've still got a bad hangover. Some hair of the dog would probably make me feel better.
我到现在头还是很痛。来点解宿醉的酒或许可以让我舒服些。
Fool around:
到处愚蠢 ×
虚度光阴 √
例句：
If you go to college, you must work hard, not fool around.
要是你上大学，就得好好学习，不能虚度光阴。
She was dressed to kill:
她打扮得要去杀人 ×
她打扮得令人神魂颠倒 √
