And if our kids rely on computer maps from a young age, they may never establish those skills in the first place.
而且如果我们的孩子们从小就依靠电子地图，他们从一开始可能就永远无法建立起这些技能。
These maps show the percentage coverage of the third dose of Hib vaccine worldwide from 1998 to 2007 in children <1year of age.
这组地图显示由一九九八至二零零七年一岁以下儿童乙型流感嗜血杆菌第三剂接种的全球覆盖率。
These maps show the percentage coverage of the third dose of Hib vaccine worldwide from 1998 to 2007 in children <1year of age.
这组地图显示由一九九八至二零零七年一岁以下儿童乙型流感嗜血杆菌第三剂接种的全球覆盖率。
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