【1】Cats should always have access to fresh, clean water.
猫应该总能喝到新鲜、干净的水。
《朗文当代高级英语辞典(英英·英汉双解)(第4版)》
【2】Cats should always have access to fresh, clean water.
应该让猫总能喝到新鲜、干净的水。
《朗文当代高级英语辞典(英英·英汉双解)(第5版)》
请老师们鉴别should always,看看哪个翻译更合理,并解释should是什么用法。谢谢。