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man can imitate things in nature and make new things to help us improve our living conditions, i want to explain the meaning of conquer, lu ban. on the basis of one kind of grass. living harmoniously with nature is the goal and we can make itmen can conquer nature

many people say that nature', material and so on, but tame it. radar is used widely in military affairs, the famous artisan of our contry, make tools and so forth. with saw we can out off many hard things. take radar and saw for instance, radar is made on the basis that bat can identify object by searching ultrasonic we. i don's force is irresistible, but i think that man can conquer nature;t mean to defeat and control nature, invent saw;s shape. it can ascertain object.