Sky Backdrop天空背景
circumfluence backdrop环流背景
backdrop procedure背景程序
Backdrop build背景搭建
multiple backdrop多次反散射
backdrop music背景音乐
N-COUNT（可数名词） A backdrop is a large piece of cloth, often with scenery painted on it, that is hung at the back of a stage while a play is being performed. 舞台背景
N-COUNT（可数名词） The backdrop to an object or a scene is what you see behind it. 背景 [usu N prep]
...the rugged cliffs that formed a backdrop to the village.
...构成村庄天然屏障的崎岖峭壁。
N-COUNT（可数名词） The backdrop to an event is the general situation in which it happens. 事件的背景 [usu N prep]
The election will take place against a backdrop of increasing instability.
选举的背景是逐渐不稳的局势。