講解：
介詞+lap
(坐著時的)大腿部
There's only one seat so you'll have to sit on my lap.
只有一個座位,你只好坐在我腿上了。
She sat with her hands in her lap.
她雙手放在大腿上坐著。

tough (on / with sb / sth)
嚴厲的；強硬的；無情的:
Don't be too tough on him—he was only trying to help.
別對他要求過嚴,他只是想幫忙。
The school takes a tough line on (= punishes severely) cheating.
學校對作弊行為的懲罰很嚴厲。

to take / have a nap
打個盹；小睡一會兒
I let her get a nap in.
我讓她睡了一會.

trouble (with sb / sth)
問題；憂慮；困難；苦惱:
We have trouble getting staff.
我們在招聘雇員方面有困難。

hit the road / trail
出發(fā)；上路
Let's hit the road.
走吧。

dog leash
狗鏈
All dogs must be kept on a leash in public places.
在公共場所所有的狗必須用皮帶牽住。