Bing Dict, Translate by selecting words, with pronunciation
Translate selected words by Bing Dict(Dictionary support EN to CN, CN to EN), with EN pronunciation, with CN pinyin, translation is disabled by default, check the 'Bing Dict' at bottom left to enable tranlation. Auto play pronunciation can be enabled in menu.
onnotfocus unload tab and save CPU!
This script detect if you are using a tab or not, if not it unload unused tab using display:none and save your CPU Usage, this script reduce CPU Usage drastically because it unload flash, gif, everything that cause animation and eat up your CPU Usage.