First you must accept he is not to blame in any way, and that around one in five four-and-a-half year-olds bed-wet once a week or more.
首先你一定要明白他完全不对此负有责任,此外有大概五分之一的四岁半孩子每周尿床一次或以上。
2
A quarter of 4-year-olds frequently wet the bed.
4岁的孩子中有1/4经常性尿床。
《柯林斯英汉双解大词典》
3
In particularly wet years, short stretches of an otherwise dry stream-bed may have flowing water because the water table rises to intersect the land surface.