As indoor background material, red rock art brick has reached a high level.

作为室内背景材料，红石艺术砖已经达到了相当高的水平。

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Geological background which is one of the main factors affecting indoor radon.

其中地质背景是影响室内氡的主要因素之一。

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The indoor and outdoor spaces, based on a cloister's model, are protected while directly relating to the landscape and the surrounding nature (fields, monuments and mountains in the background).

室内和室外空间以回廊的形式为基础，当直接与景观、周围自然（环境中的田野、历史遗迹和山峦）联系时会受到保护。

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Hnida, who later kicked for the Fort Wayne Firehawks of the Continental Indoor Football League, was surprised a player with no true kicking background would be scouted at a combine.

WSJ: Female kicker set for NFL regional combine tryout