I used to make many mistakes and have a lot of special experience in Maple Leaf.

曾经，我犯过错误也经历了很多的不寻常。

youdao

Has partial command of the language, coping with overall meaning in most situations, though is likely to make many mistakes.

可部分运用英语，尽管会有不少语言错误，但在大多数情况下对英语能有整体的理解。

youdao

Modest User. Has partial command of the language, coping with overall meaning in most situations, though is likely to make many mistakes. Should be able to handle basic communication in own field.

（加拿大移民&新西兰移民分数线）适当及格，可部分运用英语，在大多数情况下可应付全部的意思，虽然可能犯下许多错误，在本身领域内应可掌握基本的沟通。

youdao

These are the people who must scrutinise the government's proposed Organ Donation Bill and let's face it, they can't afford to make many mistakes on that one.

BBC: Dogs, ducks and ethics

Let me add one more idea here: innovation experts will tell you that you have to be willing to make many mistakes if you want to be successful.

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But none of us can afford to make that many mistakes, so it helps to understand the basic principles that are key to making wise, as well as smart, decisions.

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