In this year's study, because learning to this knowledge, I feel more confident than before I had to deal with problems, they also are more clue.

在这一年的学习中，由于学习到了这些知识，我觉得我比以前更自信了，处置难题的时候也更有头绪了。

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I entered Laos without any knowledge about the country; I spoke no English and had no clue where my family had been taken.

我在进入老挝时对这个国家一无所知；我不会说英语，不知道我的家人被带到何处。

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The principle about Redox Reaction is a main clue through the knowledge system of all the junior and senior Chemistry, which is the teaching emphasis and the difficulty.

氧化还原反应原理是贯穿中学化学知识系统的一条主线，是中学化学教学的重点和难点。

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