I'll see you in the new year.
新的'一年里再见。
The operation could prolong his life by two or three years.
这次手术可使他多活两三年。
It's been one of those days!
这一天真倒霉！
I would imagine the job will take about two days.
我猜想这工作大概需要两天左右的时间吧。
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。