P > Tempera was used to paint frescos hundreds of years ago.是什么意思？

P > Tempera was used to paint frescos hundreds of years ago.

数百年前蛋彩画颜料被用来画壁画.

tempera

n. 蛋彩画（用蛋清代油调和的鸡蛋水胶养料画法）；

例句
Certain pigment colours were painted on to dry plaster using tempera (where egg yolk is used to fix the pigment)...
使用蛋彩画颜料(内含可以定色的蛋黄)在干石膏上绘出了特定颜色。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

used

adj. 用过的，习惯于，二手的，旧的；v. 使用（ use的过去式和过去分词），常常，经常；

例句
The gym can be used by both able-bodied and disabled people.
这家健身房健全和残障人士都可使用。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

paint

n. 颜料，涂料，绘画作品，胭脂等化妆品，色彩，装饰；vt. 涂色于，绘画，（用语言，文字等）描写，擦脂粉等；vi. 描绘，绘画，化妆；

例句
The cracks are showing in the walls and a lick of paint would not come amiss.
墙面开始出现裂缝了，刷一点油漆就能补好。

frescos

--

例句
P > Tempera was used to paint frescos hundreds of years ago.
数百年前蛋彩画颜料被用来画壁画.

hundreds

n. 数百，一百( hundred的名词复数 )；

例句
There are hundreds of people desperate to adopt a child...
有数以百计的人渴望领养孩子。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

years

n. 年( year的名词复数 )，年纪，一年的期间，某年级的学生；

例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。

ago

adv. 以前，过去的，之前；

例句
He was killed a few days ago in a skiing accident...
几天前他在一场滑雪事故中丧生。