“它自己”的英语可以翻译为：itself ...

那家联合银行在它自己的地盘上就无可匹敌了。On its home turf, the combined bank would be unrivalled.你的狗应该有它自己进食和饮水用的碗。Your dog should have his own bowls for food and water.一定要让狗吃完它自己碟中的食物.Make sure that the dog always eats out of his own dish....