traditional blackboard-writing
...传统黑板书写;IT软件窗口; 图框;树形流程 [gap=738]Key words: blackboard-writing; sketch; diagram; traditional blackboard-writing; IT software windows; tree process diagram ..
基于20个网页-相关网页
traditional blackboard-writing
传统的板书
以上为机器翻译结果，长、整句建议使用 人工翻译 。