a. 低的, 下级的, 下层的 vi. 降低, 跌落, 减弱 vt. 放下, 降下, 减弱, 贬低
That’s mostly because the risk of groundwater contamination from organic farming is lower.
四级 · CET-4 2026年6月 第1套 · Part III 第46–50题
Both groups lived just as long, but those who could ride an exercise bike at a fast rate for 6 minutes in the initial test had a much lower risk of dementia later on than those who couldn’t complete the workout.
四级 · CET-4 2026年6月 第2套 · Part III 第36–45题
Over 50 years ago, researchers found that the cholesterol drug simvastatin is more effective at lowering cholesterol levels when taken at night rather than during the day.
四级 · CET-4 2025年12月 第1套 · Part III 第46–50题
They rate the post-45 job seekers lower on average on all three measures — even experience — than those ages 18 to 34.
四级 · CET-4 2025年12月 第3套 · Part III 第36–45题
Those with lower incomes: 0.9 programs on average.
四级 · CET-4 2025年12月 第3套 · Part III 第36–45题