如果你不写一份清晰的详细的答案——一份确实阐述了你所持的观点的答案——那么你就不是在向教授说明你掌握了资料。
If you don't write a clear and detailed answer-one that really explains the point you're making-then you're not demonstrating to your professor that you know the material.
在脑海中还没有一个清晰商业计划的时候，她就在宿舍里建了一个简单的网页，把自己的资料放了上去。
Without a clear business plan in mind, she started off in her dormitory by building a simple Web page with her profile on it.
此前，天文学家们几乎没有早期宇宙的资料，早期宇宙太昏暗了，甚至哈勃太空望远镜也不能拍到清晰的图片。
The problem was that astronomers had hardly any data from the early universe, which until recently was too faint even for Hubble to get any good pictures of.
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