punctiliously
/pʌŋkˈtɪliəsli/in a way that is very careful to behave correctly or to give attention to details
adverb [方式副词] 谨小慎微地;拘泥细节地;一丝不苟地
In some countries that is observed punctiliously. In others it is in effect voluntary. 有些国家严格遵守了这一规定,但另一些国家完全是自愿的。