学校: school; educational institut ...的: 4次方是 The fourth power of 2 i ...现在: now; at present; today; nowa ...和: mix; blend练习: practise; practice册: volume; book学校的现在和过去: school today and long ago现在和过去（练习册）: now and then现在和过去: now and then; present and past现在和过去不同了: now it is different from the past练习册: the workbook现在进行时和过去进行时: present and past progressive现在完成时和过去完成时: present and past perfect学校的: scholastic磁铁（练习册）: magnets地球（练习册）: the earth风力（练习册）: wind power公园（练习册）: the park花生（练习册）: peanuts轮子（练习册）: wheels木头（练习册）: wood泥浆（练习册）: mud, mud, mud土壤（练习册）: soil玩具（练习册）: toys洗车房（练习册）: the car wash
