怀疑论者经常对过滤器原始简陋的外观感到困惑，但其简约的外形设计掩盖不了它能挽救生命的神奇功效。
Skeptics often have trouble getting past the filter's rudimentary appearance, but its simple design belies its potentially life-saving properties.
怀疑论者经常对过滤器原始简陋的外观感到困惑，但其简约的外形设计掩盖不了它能挽救生命的神奇功效。
Skeptics often have trouble getting past the filter's rudimentary appearance, but its simple design belies its potentially life-saving properties.
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