上旬用英语怎么说

上旬的英文：
first third of a month

the First International
第一国际（1864－1876）

first approximation
第一次近似;第一近似值;初步近似;一次近似值;一级近似;首次近似

There was a hush at first.
先是一阵寂静。

One third of the population are townsmen and two thirds countrymen.
三分之一的人口是住在城里，三分之二住在乡下。

Passing of the Third Floor Back
四楼尽头的信道

The third coordinate is elevation.
第三项坐标是高程。

month of Sundays
很长的时间

It was a scene which was enacted month after month for these years.
这些年里，那一情况每个月都会发生。

Their dictionary was printed last month.
他们的字典已于上个月出版发行。