The team trained patients' families, who often took on typical nursing duties, to charge, or pump, the device.

这个小组还训练病人的家人如何使用设备，家人往往承担了病人的护理职责。

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Crude-oil costs are a bigger slice of the prices American consumers pay for petrol: lower sales taxes and fuel duties mean swings in oil markets have a bigger effect on pump prices.

ECONOMIST: Debt and deflation