翻译英语坚持不一定成功,但不坚持一定不会成功

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To persist may not succeed,while to give up must fail.
======以下答案可供参考======
供参考答案1:
To persist may not succeed, but not to persist must failed.
供参考答案2:
Persistence does not guarantee success, but a lack of persistence guarantees failure
供参考答案3:
Persistance will not necessarily lead to sucess, but without it, sucess will never e.