洪武年间的英文：
During the reign of the first emperor of Ming dynasty

during是什么意思：
prep. 在…整个期间；在…期间的某个时候

during one's minority
未成年期间

Drinking is not advised during pregnancy.
建议妊娠期不要饮酒。

The capture was conducted during midnight.
俘虏行动在午夜举行。

reign是什么意思：
n. 支配，统治，统治时期
v. 支配，当政，统治，君临

The revolution was followed by a reign of terror.
革命之后随即出现了恐怖统治。

The reigning ideals are transparency and accountability.
现在的主导理念是透明度和可说明性。

They will reign for ever and ever.
他们要作王，直到永远永远。

first是什么意思：
adj. 第一的；最初的
adv. 第一，最初；首先；宁愿
n. 显着成就；第一个人或事物

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。