What is it that goes up and never goes down ?请帮忙猜一下那是什么?

What is it that goes up and never goes down ?请帮忙猜一下那是什么? That is how it goes what is it that goes up and goes down but does not move?求大神级回答 句子 That is how it goes的意思 That is the way it goes.谚语翻译 It goes without saying that the time is usually limited. That is the way it goes的意思? That is the way it goes.的意思 But it's not just what goes up that matters;what comes down is unique.Ben Nevis is the highest of all British mountains,and reaching its 1343-metre top is a challenge.But it’s not just what goes up that matters; what comes down is unique.2012年重 It goes without saying that today's face-paced and market-oriented economy calls for much higher standard for service industrywhat is the meaning for this sentence?what is the meaning forit goes without saying? 猜谜语：What is more useful after it is broken?还有一个：What goes up and never goes down? what is that?It is C.为什么是 It is? 猜谜语 what grows bigger the more you take from it?what is it that was tomorrow and will be yesterdaywhat goes up but never comes down?if you feed it,it eill live ,if you give it water,it will doe.what is it?what is the best and cheapest light?how what is it that i want? That's just what it is here. 为什么what is that要用 it回答 that's what it is翻译下 that's what it is 歌词