接到通知要求補充材料，如下：
1. Submit evidence to establish how to benefit of the self-petitioner's work is of national importance. What effect would the proposed employment of the individual alien have on the United States as a whole?
2. Submit evidence to persuasively establish that national interest would be adversely affected if the beneficiary were required to obtain labor certification from the U.S. Department of Labor. Would a U.S. worker with the same minimum qualifications be able to perform the same occupation and serve the national interest to a similar degree? How will the individual alien serve the national interest to a substantially greater degree that other individuals having similar credentials in the field? Please submit persuasive documentary evidence to substantiate your response.
在已提供的材料中，已有10封推薦信，是不是還要追加推薦信？如果是，多少封為宜？
還要補充哪些材料呢？有點兒不知道從何下手。請大家幫幫忙，萬分感謝！
1. Submit evidence to establish how to benefit of the self-petitioner's work is of national importance. What effect would the proposed employment of the individual alien have on the United States as a whole?
2. Submit evidence to persuasively establish that national interest would be adversely affected if the beneficiary were required to obtain labor certification from the U.S. Department of Labor. Would a U.S. worker with the same minimum qualifications be able to perform the same occupation and serve the national interest to a similar degree? How will the individual alien serve the national interest to a substantially greater degree that other individuals having similar credentials in the field? Please submit persuasive documentary evidence to substantiate your response.
在已提供的材料中，已有10封推薦信，是不是還要追加推薦信？如果是，多少封為宜？
還要補充哪些材料呢？有點兒不知道從何下手。請大家幫幫忙，萬分感謝！
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