elementary age小学: primary school a surname儿童: children小学儿童认知发展的个体差异研究: a study on individual differences of cognitive development in primary school children失学儿童: dropout students; dropouts退学儿童: withdrawing child下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:小学儿童,即可在微信中查询翻译