数词
中文翻译：四十
同义词：
['twenty', 'twenty-one', 'twenty-two', 'twenty-three', 'twenty-four', 'twenty-five', 'twenty-six', 'twenty-seven', 'twenty-eight', 'twenty-nine', 'thirty']
例句：
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1. Ihave forty dollars in my wallet.
我钱包里有四十美元。
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2. He has forty years ofexperience in the field.
他在这个行业有四十年的经验。
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3. She has forty friends on Facebook.
她在Facebook上有四十个朋友。