讲解：
介词+lap
(坐着时的)大腿部
There's only one seat so you'll have to sit on my lap.
只有一个座位,你只好坐在我腿上了。
She sat with her hands in her lap.
她双手放在大腿上坐着。

tough (on / with sb / sth)
严厉的；强硬的；无情的:
Don't be too tough on him—he was only trying to help.
别对他要求过严,他只是想帮忙。
The school takes a tough line on (= punishes severely) cheating.
学校对作弊行为的惩罚很严厉。

to take / have a nap
打个盹；小睡一会儿
I let her get a nap in.
我让她睡了一会.

trouble (with sb / sth)
问题；忧虑；困难；苦恼:
We have trouble getting staff.
我们在招聘雇员方面有困难。

hit the road / trail
出发；上路
Let's hit the road.
走吧。

dog leash
狗链
All dogs must be kept on a leash in public places.
在公共场所所有的狗必须用皮带牵住。