Canon camera whose surface layer wears out little by little in this two years, often packed in my travelling bag, is my best confidant which shares in all my exquisite emotions.
一只佳能相机用了快两年，一直放在包里，外壳逐渐磨损，但却仿佛是最知己的老友，分享内心所有细微感受。
They have carried out several scientific experiments in this two years.
这两年中他们进行了多项科学实验。
They have carried out several scientific experiments in this two years.
这两年中他们进行了多项科学实验。
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