what is harder to establish is whether the productivity revo

英语翻译原句是：what is harder to establish is whether the productiv 英语翻译1.what is harder to establish is whether the productivit 请问:what is harder to establish is whether …….怎么翻译,里面的to esta what is harder to establish is…… What is the whether like? What I mean is to work harder. A solar day is the length of time it takes the earth to revo high productivity is hard to achieve in the beginning求翻译! what is the standard to judge whether a student is successfu what is even harder to catch if you run faster? 英语翻译This is the finish my friend,this is the end.it's a revo What do you think is the standard to judge whether a college