电商用英语可以译为"e-commerce"或"online retail". "E-commerce"是由"electronic commerce"缩写而来，意为"电子商务"，而"online retail"则指"在线零售"。

例句：

E-commerce has become an increasingly important part of the global economy. (电子商务已成为全球经济中日益重要的一部分。)

online retail sales are expected to continue to grow in the coming years. (预计未来几年在线零售销售额将继续增长。)