link for how to use less ,fewer correct:
http://v.youku.com/v_show/id_XNjkzMjYzNjQ0.html?from=y1.2-1-87.3.1-1.1-1-1-0
link for how to use less ,fewer correct:
http://v.youku.com/v_show/id_XNjkzMjYzNjQ0.html?from=y1.2-1-87.3.1-1.1-1-1-0
