at school, understand lesson, organise their work, smart board for teaching, at home, heat food, cleaning, watch tv, at hospital, x-ray the body, keep vaccine cool, treat the patient faster, at street, controls traffic, GPS find ways and streets, security the street.

how does technology help

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

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恢復自動保存: ?