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How certain are the pensions and what minimum guarantees are being offered?
养老金有多确定，现在提供的最低保证是多少？
youdao
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The cover of the pump guarantees a minimum noise level during operation.
泵盖保证运转时噪音处于最低水平。
youdao
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The cover of the pump guarantees a minimum noise level during operation.
泵盖保证运转时噪音处于最低水平。
youdao