1 problem 找麻烦的，成问题的，惹乱子的
problem child
2 leave noun 准许，许可
to be absent without leave 未经许可擅自离开
3 find+adj.
E.g. I find you sad.
I find this question difficult.
4 air 感觉，印象，神态
an air of freedom
an air of luxury
5 social climber 攀权附贵的人
party goer 爱参加聚会的人
6 violent and lovely contrast 鲜明的对比
7 filial 子女（对父母）的
filial duty
filial piety
8 presumptuous 自负，冒昧
9 the rub 问题，困难
e.g. The hotel is in the middle of nowhereand there lies the rub. We don’t have a car.
10 equal 同等的
be without equal/have no equal 无与伦比
