A belated action happens later than it should have done.
例句
...the government's belated attempts to alleviate the plight of the poor.政府一再拖延的扶贫举措...a belated birthday present.迟来的生日礼物
英英词典释义
Adverb
1. later than usual or than expected;
"the train arrived late""we awoke late""the children came late to school""notice came so tardily that we almost missed the deadline""I belatedly wished her a happy birthday"