【释义】令人快乐的事情有很多种类，不能固执地用同一种标准来讨论。
在计算中，平均故障时间越来越短。
The person who tries to live alone will not succeed as a human being. His heart withers if it does not answer another heart. His mind shrinks away if he hears only the echoes of his own thoughts and finds no other inspiration.
语言是存在的家，我们在它的词语中居住。
The novel is a great discovery: far greater than Galileo's telescope or somebody else's wireless.
