1. Clicking ▼&► to (un)fold the tree-labels may facilitate locating what you want to find. 2. All politics-oriented teaching videos on this website are embedded solely for the purpose of English learning. They do not necessarily indicate or represent my personal preferences or political positions. 3. This is just one of my several websites. Please click the category-tags below to go to each independent website.
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Safety and Security - a simple explanation
source: Simple English Videos 2014年2月27日
For an in depth explanation, click here: http://youtu.be/P7siOWqnvNA
You can see this video with a clickable transcript at my video website:http://www.simpleEnglishvideos.com/la...
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