回复：又新加了个问题，麻烦老师再看一样吧～～

谢谢863211老师～～

我还有个问题，申请人的5年postdoc不是在同一个地方做的，辗转过3个地方，请问这种情况下，是不是每个地方都需要chair或者老板sign这么一个verification letter呢？
-You only need the last position Chair to write/sign the letter, but include all your postdoc experience (five years) in the letter such Dr.XXX has five year research experience in the field of XXX since he got his Ph.D in 2005. "He had worked in the XXX University for two years, then XXXX Univerity for 1 before come to Dept in 2009. Since he came to my Dept in December 2009, Dr. XXX has worked as a Research associate..."

或者是不是可以只要找其中2个老板sign2份，保证时间大于3年就OK了？

谢谢～～