股票意味着风险和回报。
Farmers increasingly rent the land they cultivate, which can mean they are less familiar with areas at risk for erosion.
农民越来越多地租用他们耕种的土地,这可能意味着他们会更少了解面临水土流失风险的地区。
Risk factors don't mean you will definitely have more severe illness from swine flu.
危险因素不意味着你感染猪流感就一定有很严重疾病。
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