was a 和 is a有区别吗

问题描述

精选答案

was a 和 is a有区别为

was a 释义：

n. （Wasa）人名；（瑞典）瓦萨

例句：

It was a chastening experience.

那是一次令人遗憾的经历。

is a释义

锰铜

双语例句

PCI bus is taking the place of ISA and EISA buses gradually.

PCI总线已经逐渐取代ISA和EISA总线的位置.