重点词汇
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确切的
exactly; preonunced; precise; exact; definite
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保证
guarantee; promise; secure; assure; ensure; warrant; pledge; undertake; security; assurance; commitment; guaranteed
sure guarantee
确切的
exactly; preonunced; precise; exact; definite
保证
guarantee; promise; secure; assure; ensure; warrant; pledge; undertake; security; assurance; commitment; guaranteed