可以修正图片的色彩、增加文字气球、标题、图形和扭曲之类的效果。
Color-correct your pictures and add word balloons, titles, graphics, and effects like distortion.
这意味着验证码的设计者们不能仅靠增加文字扭曲程度来打击攻击验证系统的人。
This means designers of CAPTCHAs cannot simply increase the amount of distortion to foil attackers.
当表情符号在文本上出现的时候，他们一直是作为增加文字表现力的补充物。
When emoji appear with text, they often supplement or enhance the writing.
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