降低reduce;tone down;cut down;drop;lower
南瓜有助于～糖尿病患者的血糖水平。Pumpkin can benefit diabetics by lowering blood sugar levels./生活水平有所～。The level of living standards went down (or dropped)./气温～。The temperature has dropped./～成本reduce costs; keep costs down /～调门tone down rhetoric /～风险reduce risks;risk reduction /～关税总水平lower(or bring down)the overall tariff level/～劳务费reduce service charges/～门槛lower the threshold of /～消耗reduce consumption of materials |