photodegrade
(使)光致分解,(使)光降解
例句
Plastic bags do not biodegrade, they photodegrade breaking down into smaller and smaller toxic bits contaminating soil and waterways and entering the food web when animals accidentally ingest.
塑料袋不会自然降解,它们被光裂解成愈来愈小的有毒碎片,持续污染着我们的土地和水道,同时也进入了动物的食物网而被意外地吞下。