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"achieve" is more when you reached something, like "I achieved my goals" is you finally reached your goal. "Fulfill" is more when you've completed something. "I've fulfilled my dreams" is like I've finally done my dream and it's complete.
“achieve”更多的是指你达到了某件事，就像“I achieved my goals我实现了我的目标”是指你终于达到了你的目标。“fulfill”指的是你完成了某件事。“I've fulfilled my dreams我实现了我的梦想”就像我终于完成了我的梦想，它是完整的。
If you achieve a particular aim or effect, you succeed in doing it or causing it to happen, usually after a lot of effort. 实现
如果你实现了一个特定的目标或效果，你成功地做了这件事或使它发生，通常经过很多努力。
There are many who will work hard to achieve these goals.
有很多人会努力工作来实现这些目标。
If you fulfill something such as a promise, dream, or hope, you do what you said or hoped you would do.
实现 (承诺、梦想、希望等)
如果你履行了某事，如承诺、梦想或希望，你做了你说过或希望你会做的事。
President Kaunda fulfilled his promise of announcing a date for the referendum.
卡翁达总统实现了他的关于宣布投票公决日期的诺言。
To fulfill a task, role, or requirement means to do or be what is required, necessary, or expected. 完成 (任务、角色); 达到 (要求)
完成任务、角色或要求意味着做需要的、必要的或期望的事。
Without them you will not be able to fulfill the tasks you have before you.
没有他们你将不能完成你面前的任务。
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