从1933年起，每一届世博会都设有明确主题。
Since 1933, each world exposition has been provided with a specific theme.
从 1933 年起，每一届世博会都设有明确主题。
Since 1933 , each world exposition has been provided with a specific theme.
如果书中重点更明确一些也许更有益：书的主题不明确，且变化太多。
More focus would have helped: there is not enough theme, and too many variations.
如果你打算讨论一个相关的话题，那么你必须要明确表现出博文的主题思想。
If you want to discuss a related topic, create a follow-up post.
一部现代作品据说一定要主题明确，它可能就是上帝。
A modern works allegedly must theme is clear, it could be a god.
一定要有清晰明确地总结出邮件内容的主题。
Always have a subject line that summarizes briefly and clearly the contents of the message.
首先，建立一个网站，你必须要有明确的主题。
First of all, to build a web site, you must have a clear theme.
它往往具有较大的规模，而且有一个明确的主题。
每个关卡都有一个明确的，通常是“高能量”的主题，来很好的配合每关的动作。
Each level has a specific, usually high-energy theme that fits the action well.
每个关卡都有一个明确的，通常是“高能量”的主题，来很好的配合每关的动作。
Each level has a specific, usually high-energy theme that fits the action well.
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