电子学习 e-Learning ; Web-based training ; electronic learning ; Oracle iLearning

电子化学习 electronic learning

还子习俗 the custom of adopting grandchildren

多线性子空间学习 Multilinear subspace learning

学习院女子大学 Gakushuin Women's College

影子练习 Shadowing ; shadowing exercise ; shadow-exercise

便携式电子学习产品 ELP

求子习俗 customs of praying for children

电子习题 electronic exercise