Exceptions are only made when “persons have emigrated at a very young age together with their families, and who have not enjoyed the privileges of Singapore citizenship, will be allowed to renounce their Singapore citizenships without serving national service,” the Defence Ministry said.
仔细看这一段话,通篇只有这一段是国防部说的,very young,没说具体是多少。你要是在新加坡混的久一点,就应该能明白,政府的很多条例,都是没有写明白具体的参数,目的就是case by case,掌握主动性,随时可以调整。