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第10题:
the U.S. enjoyed more than any time in its history peace and economic well being
the U.S. enjoying more than any other time in its history peace and economic well being
more peace and economic well being was enjoyed by the U.S. than any other time
economic peace and well being was enjoyed by the U.S. more so than any other ~ time in the country’s history
the U.S. enjoyed more peace and economic well being than at any other time in its history
第11题:
purifying
batch
long period
temporary
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第20题:
sufficiently
approximately
considerably
properly
第21题:
about one-quarter of the vessel's length from the stern
at the bow
about one-third of the vessel's length from the bow
aft of the propellers
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