months读音为：
英 [mʌnθs]、美 [mʌnθs]
n.月;月份;约30天的时间;一个月的时间;数月;很长时间
例句：
The system was introduced on a trial basis for one month.
这个制度已引进试行一个月。
The system has been in operation for six months.
这个系统已经运行六个月了。
It will be months before we get the results.
我们要等很长时间才能得到结果。
The patients were observed over a period of several months.
这些病人被观察了数月之久。