The result is a knowledge gap that holds the Arab world back.
结果便导致了一种知识鸿沟，让阿拉伯世界无力向前奋进。
Vulnerable group; Information supporting; Information guarantee mechanism; Knowledge Gap Theory.
弱势群体；信息援助； 信息保障机制；知识沟理论。
Secondly, the gap between interest and knowledge.
二是兴趣和认识的差距。
Extraterrestrial life represents an enormous gap in our knowledge of nature.
外空是否存在生命，这是我们对自然认识的空白。
He helped us to fill in a big gap (in our knowledge).
他帮我们填满知识上的空白。
He helped us to fill in a big gap in our knowledge.
他帮我们填补知识上的空白。
One reason of the difference is the gap of knowledge altitude.
差别的原因之一是知识的差距。
One reason of the difference is the gap of knowledge altitude.
差别的原因之一是知识的差距。
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