If it is substantially longer than the stated limit, you have to consider reducing the supporting material.

如果它比要求的长度超出很多，你需要考虑减少辅助内容。

But even if there's no stated limit, or you are allowed to write as long as you like, please adhere to a self-imposed limit.

但是，即使没有明确的限制，或者你可以随意书写，也请坚持自我设限。

But even if there is no stated limit, or you are allowed to write as long as you like, please adhere to a self-imposed limit and, unless addressing a topic that needs lengthy explanation, stick to it.

但即使没有规定的限制，或者你想写多久就写多久，请坚持自己设定的限制，除非涉及一个需要冗长解释的话题，否则请坚持下去。