重点讲解：
1. shed light on
使（某事）显得非常清楚；使人了解（某事）；
eg. She has told them nothing that could shed light on her husband's whereabouts.
她没向他们提供任何有关她丈夫下落的线索。
eg. This information may shed light on me mystery.
这项情报可能有助于查明那件疑案。
2. because of
因为；由于；
eg. Many institutions exchange information by hand because of incompatible computer systems.
由于计算机系统不兼容，许多机构通过人工方式进行信息交换。
eg. The match is off because of a waterlogged pitch.
由于场地积水太多比赛被取消了。
3. heat up
激化；加剧；变得激烈（或热烈）；
eg. The election contest is heating up.
选举竞争正趋于白热化。
eg. That change heated up inflation.
那一变化加剧了通货膨胀。
