问题描述：
英语翻译
....is reduced on average by 80% within 15 years..... 少了个“within”
"of the start of exploitation" 我感觉用 "since the start ...." 应该没有问题吧
....is reduced on average by 80% within 15 years..... 少了个“within”
"of the start of exploitation" 我感觉用 "since the start ...." 应该没有问题吧
问题解答：
我来补答展开全文阅读