translation.en: Now it's bad enough that breast density makes it hard to find a cancer, but it turns out that it's also a powerful predictor of your risk for breast cancer.
translation.zh: 好吧，高乳腺密度已经导致 寻找肿瘤比其它情况更困难， 然而更糟的是 高乳腺密度也有力地预示 乳腺癌患病率的高风险。