1. vocabulary once adv. 一次,曾经 They cocktailed once every week. He once lived in shanghai. twice adv 两次 she does for us twice a week I mop the kitchen Read More
1. vocabulay 1.1 scary adj.令人恐怖的 This is a scary thing. you can construct some extremely scary scenarios for yourself without too much trouble. 1.2 su Read More
linux 环境下怎样对不同的python环境进行 方便的切换呢?update-alternatives工具能够非常方便的帮我们完成这个任务。而windows环境下可通过anaconda来完成. 1.通过update-alternatives工具来管理python版本的切换 2.update-alt Read More
参考:http://www.gnu.org/software/make/manual/make.html '$(@D)'The directory part of the file name of the target, with the trailing slash removed. If the Read More