例句：
Rivalry between the two industries presents a big headache for government.
这两种产业的对抗使政府深感棘手。
But, in the short term, it is a big headache.
但就短期来看，这极其棘手。
With population rapidly increasing, heavy traffic has become a big headache for many cities.
随着人口的迅速增长，交通拥挤已成为许多城市难以解决的问题。
The cost is only a fraction of his salary.
那项费用不过是他薪水的一小部分。
The circle is divided into sections, and each section represents a fraction of the data.
这个圆被分成几个部分,每个部分代表数据的一小部分。
The message arrives in your brain in a fraction of a second.
信息瞬间便可传递到大脑。