an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation
造句
用作名詞(n.)
The Persian garrisons, on the other hand, were oases of luxury. 在波斯灣駐軍，另一方面，是綠洲的奢侈品。
Where underground water comes to the surface, there are oases. 地下水流到地表的地方，就成為了綠洲。