cruder

adj.天然的；未加工的；粗鲁的；粗糙的；简陋的

n.原油；天然的物质

China is a country rich in crude oil. 中国是一个原油丰富的国家。

The price of crude oil has come down recently. 最近原油的价格已经下降了。

This crude glycerin is from pure virgin vegetable oil. 这是未加工的甘油，来自纯洁，原始的植物油。

It was crude of him to say that. 他那样说太粗鲁了。

We turned upstream to find a crude wooden bridge. 我们转向上游走，发现了一座粗糙的木桥。

Primitive man hunted wild animals with crude stone implements. 原始社会的人用粗糙的石器猎取野兽。

The great man is said to have been born in a crude hut. 据说那个伟人生于一个简陋的小屋里。

In fact, a speciality crude is suitable only for bitumen production. 事实上，这种特性的原油只适宜于生产沥青。