在全世界几乎所有的国家中，小学教育都是义务的。
Elementary education is compulsory in almost every country in the world.
不幸的是，世界上几乎所有的国家在预防癌症方面都做得不够。
Unfortunately, virtually no country in the world is doing enough to prevent cancer.
几乎所有的国家都希望朝这个方向前进，但同时又对所需要的花费表示担忧。
Nearly all countries want to move in this direction but are worried about the costs.
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