求翻译：１９２４年《种族法案》，国会首次制订了永久性配额，规定除西半球国家外，全世界所有其他国家每年进入美国的移民总数最多不得超过１５万人，对每个国家的配额分配以１９２０年美国的种族结构为依据，同时规定任何外国人要进入美国必须首先向美国境外的领馆申请签证，无签证进人美国将在任何时候被递解出境，此外还增加了对亚洲移民的限制。是什么意思？

Ethnic Act 1924, the Congress for the first time developed a permanent quota requiring that the total number of immigrants in addition to the Western Hemisphere, all other countries in the world each year to enter the United States not more than 15 million of each country's quota allocation to 1920

The 1924 Act, the National Assembly of the first permanent quotas were developed states of the hemisphere, and in addition, all the other countries of the world to enter the United States each year not to exceed a maximum total number of immigrants, 150,000 people in each country's quota allocation

In 1924 "Race Bill", Congress has drawn up the permanent quota for the first time, stipulated besides the The Western Hemisphere country, the world possesses other countries to enter US's immigration total to be most every year does not have to surpass 150,000 people, to each national quota assignme

1924 race Bill under, Congress first developed has permanent quota, provides except Western Hemisphere national outside, world all other national annually entered United States of immigrants new definitions today, up shall not be over 150,000 people, on each national of quota distribution to 1920 Un

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