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持之以恒啥意思?

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持之以恒啥意思?
持之以恒啥意思?
持之以恒----意指长久不懈地坚持下去.
To persevere at/ with / in (doing) something
例:.In spite of all obstacles and failures,the scientist persevered with his experiments.
尽管阻力重重并屡遭失败这位科学家还是坚持试验.