努力不一定成功
Efforts do not necessarily lead to success.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
努力不一定成功，但放弃一定失败。
Efforts may not fruit success, yet surrender do breed failure.
youdao
努力不一定成功，但放弃一定失败！
Attempt doesn't necessarily bring success, but giving up definitely leads to failure.
努力不一定成功，但不努力一定不成功。
Efforts may not succeed, but not hard to succeed.
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