把斧頭磨利很重要https://twitter.com/kentbeck/status/1111281250059182081?s=21 Tags: 0 comments 1 likes 5 shares Share this: DavidKo Learning Journey About author not provided It's about self-learning world. I'm interested many topics and would like to apply real environment and share with all my friends. 2398 followers 2144 likes "http://kojenchieh.pixnet.net/blog" View all posts