单词：calliper compasses
[复数]弯脚圆规
单词：calliper compasses 相关文章
2、有些名词为自然复数名词，即只有复数的形式，例如： trousers（裤子）glasses（眼镜）scales（天平）tongs（夹子）binoculars（双筒望远镜） pincers（手钳）compasses（圆规）pants（裤子）crossroads（
发表于:2019-01-02 / 阅读(299) / 评论(0)
薄冰实用英语语法详解
薄冰实用英语语法详解
[00:01.56]Gunpowder [00:03.47]Gunpowder was invented by the Chinese [00:05.73]in the eighth century AD. [00:08.28]Early Chinese scientists discovered [00:10.64]that they could make an explosive substance [00:12.76]by mixing sulphur,charcoal and saltp
发表于:2019-01-10 / 阅读(477) / 评论(0)
北师大版高中英语模块7(选修)
北师大版高中英语模块7(选修)
By calculating how old the rocks are where we find these ancient compasses, we can figure out how long ago the magnetized parts were locked in. That tells us which direction was magnetic north tens of thousands of years ago. Surprisingly, its not alw
发表于:2019-02-23 / 阅读(320) / 评论(0)
英语时差8，16
英语时差8，16