求翻译：书籍被誉为人类进步的阶梯、终身伴侣、最诚挚的朋友，因为读书不仅可以给人智慧，使人充实，还可使人勇敢，可以让人温暖。是什么意思？

The books known as the ladder of human progress, constant companion, the most sincere friends, reading not only can give wisdom, and makes a full, but also brave people, that people can warm.

Books are known as the ladder for the progress, and human life-long companion, the most sincere friends, because reading can not only to man's wisdom, so that people can be so enriching and also have the courage, you can get warm.

The books by the reputation the steps and ladders, the life companion which progresses for the humanity, the sincerest friend, not only because studies may give the human the wisdom, causes the human to be substantial, but also may cause the human to be brave, may let the human be warm.

Book known as the ladder of human progress, life partner, best friend, because reading can not only give people wisdom, makes a full man, can also make you brave, you can keep people warm.

正在翻译，请等待...