例句：
Fifteen points allocated among four goals.
15点分布在4个目标之中。
The level of carbon monoxide in a smoker's blood is four times higher than normal, and it can be as much as fifteen times higher in the blood of heavy smokers.
一个吸烟者血液中一氧化碳的水平比正常值高出四倍，而在重度抽烟者的血液里，则可能高出十五倍之多。
It was an enormous animal, fifteen or sixteen feet long, and must have weighed from three to four thousand pounds.
这是一只巨大的动物，长达十五到十六英尺，至少有三千到四千磅重。
