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重点讲解：
1. result from 由…产生；由…引起；
Many hair problems result from what you eat.
很多头发问题都是由饮食引起的。
2. be made up of （由…）构成的；（由…）制成的；
Speech is made up of sound waves that vary in frequency and intensity.
语音是由不同频率和强度的声波组成的。
3. result in 导致；引起；造成；
Fifty per cent of road accidents result in head injuries.
50％的道路交通事故都会导致头部损伤。
4. rule out 排除；不予考虑；
The Prime Minister is believed to have ruled out cuts in child benefit or pensions.
据信首相已经排除了削减儿童救济金或养老金的可能。
