什麽意思？

前兩天才把補充材料寄走，今天收到這樣的信息。這是什麽意思啊？你們也是收到這樣的消息嗎？先謝了。

On May 19, 2006, we received your response to our request for evidence or information. It is taking between 150 and 180 days for us to process this kind of case. However because preliminary processing was complete, the remaining processing time will be less than the maximum stated in this message. You will receive a written decision on this case.