斯坦福大学的研究小组对这一深度以下的地下蓄水层进行了调查，发现蓄水量或许是先前所预想的三倍。
The team at Stanford investigated the aquifers below this depth and found that reserves may be triple what was previously thought.
科学家们认为这个最新研究对以下结论提供了一个强有力的证据：获取食物这一动作更多的表现为一种自发的行为，也就是说对食物的条件反射超乎我们的控制。
The new study, say the scientists, offers stronger evidence that how we eat may depend on automatic, conditioned responses to food that are beyond our control.
根据该研究，恶劣的卫生条件是水传播疾病的一大诱因，通过这一方式传播的疾病在过去三年内共导致了全球约450万五岁以下的儿童丧生。
Poor sanitation is a major contributor to water-borne diseases, which in the past three years alone killed an estimated 4.5 million children under the age of five worldwide, according to the study.
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