Scientists believe the rubberized surface found in many school and college playgrounds gives off a poisonous gas in strong sunlight.
科学家发现，很多中学或大学操场的塑胶表面会在强烈光照下散发出有毒气体。
The track area is an elastic rubberized surface containing up to 10 lanes each just over one meter wide.
跑道区的表面铺设了弹性的橡胶，一般最多设有10根跑道，每根跑道宽1米。
Rubberized surface, it is easy to clean up.
塑胶表面，易于清理。
Rubberized surface, it is easy to clean up.
塑胶表面，易于清理。
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