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...并列;

　　range from ... to ...变化范围从...到...;

　　within range of/between在...范围内变化;

　　on a daily basis每天，

　　eg: Investors can buy and sell on a daily basis.