有什么你是不精通的吗?。
对于那些不精通高等数学的人来说,这是不可能的。
For those of us not versed in higher mathematics, it is impossible.
虽然不精通电脑的人要升级听起来很吓人,其实也没有什么困难的,如果事知道需要什么和怎么去做。
While upgrading might sound intimidating to someone who's not computer savvy, it isn't that difficult if one knows beforehand what he needs and how he should proceed.
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