It helps to have a digitalcamera or a scanner, but it's not required.

如果有一台数码相机或扫描仪，效果会更佳，但这不是必需的。

youdao

It helps to have a digitalcamera or a scanner, but it's not required.

如果有一台数码相机或扫描仪，效果会更佳，但这不是必需的。

youdao