C-3：chuckhole 路上的坑
A:Dad, you've been driving for three hours. Why don't we have a switch?
A:爸爸，你都开了三个小时车了，咱们换换吧。
B:There're a lot of chuckholes on this old highway. Driving on it is experience-demanding.
B：这条老路上有很多坑，开车得有经验才行。
A:Trust me. I've been driving for two years.
A:放心吧，我都开了两年了。
B:OK. You drive and do be careful.
B:那好吧，你来开，一定要当心啊。
