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1·They have nineteen days to make up their minds.

他们有十九天的时间来做出决定。《柯林斯英汉双解大词典》

2·Is nineteen more than eighteen?

十九比十八多吗？

3·Ten plus nine is nineteen.

十加九是十九。

4·It's only nineteen yuan.

它只要十九元。

5·He has nineteen cards.

他有十九张卡。

6·I will be nineteen years old tomorrow.

明天我将十九岁了。

7·I was a mother at the age of nineteen.

我在十九岁的时候当了妈妈。

8·You were nineteen years old last year.

去年你十九岁。

9·There are fifteen boys and nineteen girls.

男生有十五位，女生有十九位。

10·There are nineteen floors in this building.

这座大楼有十九层。

十九

1·They have nineteen days to make up their minds.

他们有十九天的时间来做出决定。《柯林斯英汉双解大词典》

2·It's only nineteen yuan.

它只要十九元。

3·Ten plus nine is nineteen.

十加九是十九。

4·He has nineteen cards.

他有十九张卡。

5·I was a mother at the age of nineteen.

我在十九岁的时候当了妈妈。

十九岁

1·I was nineteen, not yet in college, not old enough, in my parents' opinion, to have a boyfriend.

我十九岁，还没有上大学，在父母眼里也还没到交男朋友的时候。

2·Another youth, about nineteen, had formerly been an ironsmith's apprentice in Hunan.

另一个少年大约十九岁，在湖南当过铁匠学徒。

3·At the time I was nineteen, and regarded myself as part of the sixties youth counterculture.

那时我十九岁，自认为是六十年代‘青年反主流文化’。

4·The little wretch is only nineteen.

那个小坏蛋还只有十九岁。

5·It is quite unusual for a freshman to be young er than eighteen or older than nineteen.

一年级新生小于十八岁或大于十九岁是相当特殊的。

十九个

1·Nineteen barricades were ranged, one behind the other, in the depths of the streets behind this principal barricade.

十九个街垒层层排列在这母垒后面的几条街道的纵深处。

2·The ceremony was performed at the same time in nineteen other countries .

这一仪式同时在十九个其它国家举行。

3·There are nineteen students in our class.

我们班有十九个同学。

4·There are nineteen boys in our class.

我们班有十九个男生。