求翻译：如美国“购买美国货法案”规定：凡是美国联邦政府采购的货物，应该是美国制造的，或者是用美国原料制造的。只有在美国自己生产的商品数量不够时，或者国内价格过高，或者不买外国货就会伤害美国利益的情况下，才能购买外国货。是什么意思？

Such as the U.S. "Buy American Act" provides that: Any U.S. federal government procurement of goods, should be American-made, or made with American ingredients. Only in the United States itself is not enough quantity of goods produced, or the domestic price is too high, or not to buy foreign goods w

For example, the United States." "to purchase US goods Act stipulates that any United States Federal Government Procurement of goods manufactured in the United States, and should be, or to use raw materials in the manufacture of the United States. Only when the United States production of its own, a

If US “purchases the beautiful domestic products bill” to stipulate that,Every is a cargo which US Federal state purchases, should be US makes, or is makes with the American raw material.When only then commodity quantity which produces in US insufficient, either the domestic price excessively is hig

If the United States "to buy United States Bill of goods" requirement: all United States Federal Government purchases of goods, should be the United States manufacturing or United States raw material manufacture. Only in the United States when an insufficient number of goods of own production or dom

If U.S.A.'s " buys the American goods bill " stipulates: The goods of every American federal government procurement, it should be Americanized, or is made of American raw materials. When quantity enough in goods that American oneself produce only, or the domestic price is too high, or does not buy i