The back word is Netease's back word App. Different from ordinary software for memorizing words, Youdao dictionary is not only a "memorizing" tool, but also has some elements to improve learning efficiency. A dictionary can better combine all kinds of word resources, and then help users improve their learning efficiency through some practical tools and learning social circles.

The origin of words

Historically, English has been absorbing words from other countries, and almost half of the existing words were not first invented by English speakers. For example, the altar and jury are legal and religious concepts brought by the Romans and the French, as well as the influx of foreign foods, such as spaghetti and Indian curry, and words that can express complex feelings and feelings better than English, such as Maggie Simo and gloating.