// Receives chunks or null (flush signal)
社運人士郭鳳儀：香港當局監禁我父親，企圖令我噤聲，推荐阅读同城约会获取更多信息
What is Canva?Canva is a free graphic design web application that allows you to create invitations, business cards, flyers, lesson plans, banners, and more using professionally designed templates. You can upload your own photos from your computer or from Google Drive, and add them to Canva's templates using a simple drag-and-drop interface. It's like having a basic version of Photoshop that doesn't require Graphic designing knowledge to use. It’s best for nongraphic designers.，更多细节参见爱思助手下载最新版本
等到他们需要使用键盘鼠标来提升效率，这些围绕他们打造的工具，自然也需要贴合他们的习惯做出改变。