previous period

• n. 上期；前期

previous period的用法和样例：

例句

用作名词 (n.)

1. When the item is bidden,we will immediately make preparation for the previous work.
   项目中标之后，我们将立即开始前期准备工作。
2. Therapy with phentolamine produced a significant decrease in the preejection period index.
   用酚胺唑啉治疗，能使喷射前期指数大大降低。