NaCl

基本解释

NaCl and Pepper are the salt-and-pepper of web applications, adding what was missing to a more complete web experience.
NaCl和Pepper是Web应用的增色剂，它们加入了一些缺失的功能，使Web应用更加完整。
Google advertises a performance drop of less than 5% for running NaCl code inside the browser compared to out of the browser.
Google认为，相比在浏览器外运行NaCl代码，在浏览器中运行的性能损失低于5%。
Also, NaCl was intended initially to run on multiple browsers, but it seems that only Chrome will support it because others don’t use Pepper.
同样，NaCl本来希望能够支持多浏览器，但是现在貌似只有Chrome将能够运行代码，因为其他的浏览器不支持Pepper。