这是很好的计算工具在当时的翻译：This is a very good computing tools at the time 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

This is a good tool for calculating the time

This is a very good computing tools at the time

This was the very good computation tool in at that time

This is a very good computing tool at that time

This is a very good computing tools at the time