求翻译：今天，我要演讲的的不是关于我的大学生活，而是有关尝试的故事，我一直是个不太自信的女生，从小学到高中，我总是否定自己的能力，因此错过了很多锻炼自己和展示自己能力的机会，而今，我已经是大学生了，我觉得自己应该果断地肯定自己一次，因为以后要面临的挑战还有很多。昨天我们班长说的一句话我觉得很好:“努力了不一定成功，但放弃一定失败。”不尝试我又怎么知道自己不行。因此我决定抓住这次机会，找回自己的自信，我希望大家能够支持我，也希望评委能够给我这次机会，谢谢大家。是什么意思？

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Today, I must lecture is not about mine university life, but is the related attempt story, I always am a not too self-confident female student, from the elementary school to the high school, I always denies own ability, therefore missed has very exercised oneself and demonstrated oneself ability the

Today, I to speech of of is not on I of University life, but about attempts to of story, I has been is a does not too confident of girls, from small learn to high school, I always negative own of ability, therefore missed has many exercise own and show own ability of opportunities, now, I has is stu

Today, whom I want lecture about university life of me, about trying story, I have been a girl not very self-confident all the time, from primary school to the high school, I always deny one's own ability, chance of the ability that that so has missed a lot of exercise and displays oneself, now, I a