视觉线索 meaning in English

visual cues

But this is the first time it ' s been shown that they can distinguish different languages from visual cues alone
不过这是首次显示出他们仅从视觉线索上就能区分不同的语言。
The study shows the importance of visual cues , such as the shape of the mouth , for babies in the early stages of acquiring language
这项研究表明了视觉线索如口型对早期阶段宝宝学习语言的重要性。
There are many visual clues our eyes need to understand the relationship between objects in an image , but one of the most important is shadows
我们的眼睛需要许多视觉线索来判断一张画中物体的关系，其中最重要的是阴影。