burn的过去分词和过去式：burnt
adj.烧坏的;烧伤的;烫伤的;灼伤的
v.燃烧;烧;着火;烧着;(使)烧毁，烧坏，烧伤，烧死
相关介绍
例句：
When burnt, plastic produces dangerous by-products.
塑料燃烧时产生出危险的副产品。
The clutch has burnt out.
离合器因过热而失灵了。
The wires had short-circuited and burnt out.
电线短路，烧坏了。
burn的过去分词和过去式：burnt
adj.烧坏的;烧伤的;烫伤的;灼伤的
v.燃烧;烧;着火;烧着;(使)烧毁，烧坏，烧伤，烧死
例句：
When burnt, plastic produces dangerous by-products.
塑料燃烧时产生出危险的副产品。
The clutch has burnt out.
离合器因过热而失灵了。
The wires had short-circuited and burnt out.
电线短路，烧坏了。
