Pioneer and successional plant communities are said to change over periods from 1 to 500 years.
先驱者和演替植物群落据说是以1-500年的时间区间变化的。
You can expect to pay the bank a fee of around 1% to 2% every time you change money.
每次兑换钱时,你要准备支付银行约1%至2%的费用。
First is climate change, marked by a 1-degree Fahrenheit rise in average yearly temperature across the western states.
首先是气候变化,记录显示,西部各州的年平均气温上升了1华氏度。
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