It's a bit like trying to work out the street plan of a city by Shouting loudly and listening to the sounds that bounce off the walls.

这好比试图找出一个大声大声，听声音的跳出了墙壁城市街道计划位。

youdao

If you have access to a flash that can bounce off the ceiling or walls, that could work much better.

要是您有机会接触下那种可以从天花板或者墙壁反射回来的闪光灯，效果则会明显得多。

youdao

If you have access to a flash that can bounce off the ceiling or walls, that could work much better.

要是您有机会接触下那种可以从天花板或者墙壁反射回来的闪光灯，效果则会明显得多。

youdao