睡眠质量和压力水平是预测心脏病风险的重要指标。

Sleep quality and stress levels are key ___predictors of heart disease risk.

研究人员选择了年龄、收入和教育水平作为预测模型中的三个主要预测因子。

The researchers selected age, income, and education level as the three main ___predictors in their forecasting model.

这些新的股票预测工具比传统方法准确得多。

These new stock ___predictors are much more accurate than traditional methods.