树木发育周期developmentaldisordersof eechandlanguage: 言语和语言发育障碍developmentalcondition: 发育情况developmentalitem: 开发项目developmentalaphasia: 发育性语言不能 发展性失语症developmentally disabled: 发育性残疾,渐强性残废下载手机词典可随时随地查词查翻译