Better sediment control has reduced the risks of flooding with a network of small DAMS helping store water for towns and for agriculture when rainfall is low.
泥沙控制力度的加大降低了洪水风险，而新建的小型大坝网络可以在降水量较低的情况下帮助集镇和农业储存用水。
Participants were randomly assigned to either use green tea every day, as a beverage or capsule, or be part of "control" groups that took placebo capsules, drank a low-catechin tea or downed water.
实验的参与者被随机分配到每天都服用绿茶饮料或胶囊制品的实验组和服用安慰剂胶囊和喝低儿茶素的茶或者更直接饮用水的控制组。
Flood control requires the reservoir maintain low levels of water to allow for the inflow of flood waters, while power generation requires high levels of water in the reservoir.
抵御洪水需要水库保持低水位运行，以容纳洪水的流入，而水库只有保持高水位才能满足发电的需要。
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