a certain degree of tourists'conformity to the local customs and behavior is still necessary.

问题描述:

a certain degree of tourists'conformity to the local customs and behavior is still necessary.

游客们在一定程度上对当地的习俗和行为的遵从仍然是必要的.
(意思大概是说:游客要尊重当地的习俗文化等)