when they arrive at thier grandparents' home ,the suitcases are brought into the two seats can then carry the grandparen

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• when they arrive at thier grandparents' home ,the suitcases are brought into the two seats can then carry the grandparen
• 英语翻译one of the cars is sold and they will buy a car不过如果能翻译这段文章还可以提高悬赏哦!能翻多少翻多少 Mr.Hagen and his wife had a third child last year.This made them sell a second car and bus a van.Their children sixth and seventh seat are used to put other things,for a family of five must carry many suitcases(衣箱)when they travel.When they arrive at their grandparents’ home ,the suitcases are brought into the two seats can then carry the grandparents.Americans call vans mo
• when they arrive at thier grandparents' home ,the suitcases are brought into the two seats can then carry the grandparents
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• 将一质量为2kg的物体竖直上抛一段时间后，物体竖直下落．假设物体在上抛和下落过程中空气阻力始终为重力的0.1倍，则在上抛和下落过程中物体所受的合力分别为多少？方向如何？