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重点讲解：
1. close to
近的；接近的；
eg. Warm weather has attracted the flat fish close to shore.
煦暖的气候将比目鱼引到了近海。
eg. David's house is quite close to the Global Theater.
大卫的家离环球剧院很近。
2. come in
（潮）涨；
eg. The tide usually starts to come in at about six o'clock.
通常六点钟就开始涨潮了。
eg. The tide doesn't come in for six hours!
6小时后才涨潮！
3. feed on
以…为食，以…为能源；
eg. The caterpillars feed on a wide range of trees, shrubs and plants.
毛虫以各类树木、灌木和植物为食。
eg. Birds feed on nuts and berries in the winter.
鸟类靠坚果和浆果过冬。
adj. 黑暗的，朦胧的，烟雾弥漫的，含糊的，隐晦的
