雅思写作常用词汇：变化幅度/范围　　range/scope/extent/limits/span/field/bounds; 　　a range of很多/一系列; 　　in range with与.
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并列; 　　range from .
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to .
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变化范围从.
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到.
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; 　　within range of/between在.
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范围内变化; 　　on a daily basis每天， 　　eg: Investors can buy and sell on a daily basis.