有经验的能不能帮我解释一下这条？
Top-up Grant to the Family Grant amount of $30,000 or $40,000 for Singles Grant recipients who subsequently get married. Also applicable for Singles Grant recipients under the Non-Citizen Spouse Scheme whose non-citizen spouse or child subsequently obtained Singapore citizenship or permanent residence
丁悦
non-citizen spouse scheme
top-up grant 是指享受过CPF GRANT，但是后来家庭成员的身份发生变化，比如外国人变成永久居民或公民，家里添了人口，小孩是公民或永久居民，这时就可以申请剩余的部分，比如现在拿了11K, 等身份发生变化后6个月内去申请top-up grant， 这时就可以拿到30k-11k=19k. 而且如果家庭收入不超过5k, 你们还可以申请additional CPF housing grant (enhanced)。你如果要买房子，可以跟我联系。98733635