我没有幕布，所以我把幻灯片投射到一块旧的白床单穿恭扁枷壮磺憋委铂莲上。

I had no screen, so I projected the slides onto an old white sheet.

youdao

我没有幕布，所以我把幻灯片投射到一块旧的白床单穿恭扁枷壮磺憋委铂莲上。

I had no screen, so I projected the slides onto an old white sheet.

youdao