你給的連接上說得很清楚呀。

來源: HHLL 2006-05-15 14:23:37 [] [博客] [舊帖] [給我悄悄話] 本文已被閱讀: 次 (848 bytes)
First: Unmarried Sons and Daughters of Citizens: 23,400 plus any numbers not required for fourth preference.

Second: Spouses and Children, and Unmarried Sons and Daughters of Permanent
Residents: 114,200, plus the number (if any) by which the worldwide family preference level exceeds 226,000, and any unused first preference numbers:

A. Spouses and Children: 77% of the overall second preference limitation, of which 75% are exempt from the per-country limit;

B. Unmarried Sons and Daughters (21 years of age or older): 23% of the overall second preference limitation.

Third: Married Sons and Daughters of Citizens: 23,400, plus any numbers not required by first and second preferences.

Fourth: Brothers and Sisters of Adult Citizens: 65,000, plus any numbers not required by first three preferences.

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