Gasoline is distilled from crude oil.是什么意思？

Gasoline is distilled from crude oil.

汽油是从原油中提炼出来的.

gasoline

n. 汽油；

例句
The oil companies were accused of contriving a shortage of gasoline to justify price increases.
石油公司被控故意制造石油短缺以名正言顺地提高油价。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

distilled

adj. 由蒸馏得来的；v. 蒸馏( distil的过去式和过去分词 )，从…提取精华；

例句
The whisky had been distilled in 1926 and sat quietly maturing until 1987...
这种威士忌是在1926年通过蒸馏提取的，尔后静置到 1987年才酿熟。

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

crude

adj. 粗糙的，粗杂的，粗鲁的，天然的，未加工的，简陋的；n. 原[生]材料，天然物质，原油；

例句
Don't be crude tonight, Bernard, it doesn't become you.
今晚别说荤话，伯纳德，说荤话可不好。

oil

n. 油，石油，油画，燃油；vt. 给…加油；vi. 化成油；

例句
Several magnificent oil paintings adorn the walls.
几幅恢宏的油画装点着墙面。