The milkmaid milks the cows twice a day.是什么意思？

The milkmaid milks the cows twice a day.

挤奶女工一天两次为奶牛挤奶.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

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

milkmaid

n. 挤奶的妇女，在酪农场工作的女性；

例句
She was hired as a milkmaid in that farm.
她被雇佣为那个农场的挤奶女工.

milks

v. 产奶，挤奶( milk的第三人称单数 )，榨取，勒索；

例句
The milkmaid milks the cows twice a day.
挤奶女工一天两次为奶牛挤奶.

cows

n. 母牛( cow的名词复数 )，雌象，婆娘，娘儿们；

例句
When his cows calve each year he keeps one or two calves for his family.
他的母牛每年产犊时,他都给自家留上一两头。

twice

adv. 两次，两倍，两遍；

例句
Although he was twice as old as us, he became the life and soul of the company.
虽然他的年纪是我们的两倍，但他却成为了公司的灵魂人物。

day

n. 一天，白天，时期，节日；adj. 日间的，逐日的；adv. 每天，经常在白天地；

例句
Avant-garde music to this day has not found general public acceptance.
先锋音乐时至今日都没有得到大众的广泛认可。