America’s skilled white-collar work force has overtaken the ranks of skilled blue-collar workers for the first time.(翻译)
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It’s crucial to specify either a percentage increase or salary figure that should be
Thinking he had landed in the East Indies, he called these people “Indians”.(翻译)
Recently, archeologists have discovered clues at digs in both North and South America
Scientists disagree on the date, but some say it may be much earlier than anyone thought.(翻译)