It's only nineteen yuan.
它只要十九元。
They have nineteen days to make up their minds.
他們有十九天的時間來做出決定。
How many towels are there? There are nineteen towels.
有多少條毛巾？有十九條毛巾。
I was a mother at the age of nineteen.
我在十九歲的時候當了媽媽。
I will be nineteen years old tomorrow.
明天我將十九歲了。
He has nineteen cards.
他有十九張卡。