<p style="font-size: 12px;color:#aaa;">版权引用：<a href="https://www.behance.net/gallery/20477679/SkyMath-Floating-Islands"><span style="font-size: 12px;color:black;">“ SkyMath         SkyMath is an iPad app developed by Circumventure Learning that help kids improve their math skills while traveling through a world of magical floating islands. You can support the project here  ○ The Pumpkin House Island ○ ”</span> </a>由 <a href="https://www.behance.net/andra"><span style="font-size: 12px;color:black;">Andra Popovici</span></a> 授权许可 <span><a href="https://creativecommons.org/licenses/by-nc/4.0/deed.zh" target="_blank" style="font-size: 12px;color:black;">Attribution-NonCommercial 4.0 International<img src="" style="display: inline-block;height: 16px;width: auto;"></a></span></p>