但是问题来了，一些游客的行为很不礼貌，他们习惯在一些旅游景点上做些标记，以证明他们曾经来过这里。

But the problem comes, some tourists act very impolitely, they get used to make some marks on the tourist sites, so as to prove that they have visited here.

youdao

插队是很不礼貌的行为。每个人都应该排队等候。

It is rude to cut in line. Everyone should wait their turn.

youdao

当时在宴会中途离开被认为是很不礼貌的行为。

As it was considered extremely bad etiquette to leave the table before the meal was finished, he stayed until he became fatally ill.

youdao