The app provides error-correction for your spelling.
这个应用会帮你进行拼写错误纠正。
In digital communications, error-correction codes add redundancy so that the receiver can recover the original message even when some bits are corrupted.
在数字通信中,纠错码会加入冗余信息,使接收端即使遇到部分比特被破坏,也能还原原始信息。