总的图像不清晰度 Totel image unsharpness
对比度不够，因此电视图像不清晰。
There wasn't enough contrast, so the TV image was hard to see.
youdao
如果图像不清晰，可能会要你再做X光。
If they aren't clear, you may be asked to have more X-rays done.
最近我的电视图像不清晰，你的怎么样？
My TV hasn't got a clear picture recently. How's yours?
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