曝光率的英文：
exposure（rate）

参考例句：

"Gibson has also received huge coverage, some of it controversial, from his film."
“吉布森的新闻曝光率也很大，其中有些报道对他的电影颇有争议。”

exposure是什么意思：
n. 暴露；揭露；陈列；曝光

The AE lock mode locks the exposure value for precise exposure metering.
自动曝光锁定模式能锁定精确曝光测定时的曝光值。

You'd better consult the exposure meter if you're not sure of the time for exposure.
如果你吃不准曝光时间，最好查一下曝光表。

To accustom by frequent repetition or prolonged exposure.
使……习惯由于经常重复或长时间接触而适应。

I have three exposures left on this film.
这卷胶卷我还有三张底片未拍。

This was our only exposure to the complexities of the Middle East.
我们面临中东的复杂局面，决不仅仅是只此一次。

rate是什么意思：
n. 比率，速率；费用
v. 评估；认为；划分等级；值得

cumulative rating
累积收听率

These bonds have an AAA rating.
这些债券的信用度是3A级的。

To rate too low;underestimate.
低估对…估价太低；低估

A Lump Sum Rate of ...
费用合计…

To reduce in rank or rating;demote.
使降级降低级别或降级；使人降级