紧急暴露限值的英文：
EELS, emergenc exposure limits

eels是什么意思：
n. 鳝；鳗

The electric eel is an amazing storage battery.
电鳗是一个惊人的电量存储库。

Finally one of the servants remembered the eels in the urn
最后一个仆人想起了瓮里的

There's absolutely no comparison between lobsters and eels.
龙虾与海鳗两者完全不能相比。

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。