at it again

基本解释

After a month or two, people will be at it again.
而后一两个月，人们又会入市。
blog.sina.com.cn
Now some countries are at it again, even more forcefully than before.
现在一些国家又再一次将矛头指向“互联网管理论坛”大会。
Then we're offered a plateful of pancakes smothered in maple syrup, our appetite overpowers our reason, and before we know it, we're at it again.
然后一碟涂满槭糖浆的煎饼摆在面前，我们的食欲战胜了我们的理智，等到我们意识到它的时候，我们又重蹈覆辙了。

Let's look at it again. All right it's time to interrupt the world, and we'll just type into the shell.
好，让我们再来看看,好，我们输入shell命令，看结果怎么样。
麻省理工公开课 - 计算机科学及编程导论课程节选
At the same time it's part and parcel of that elite body of knowledge, so again there is this kind of two-facedness to the advertisement.
同时，它是精英知识主体,的不可或缺的一部分，所以这也是这个广告的两面性。
耶鲁公开课 - 1945年后的美国小说课程节选
But again, that we will supply for you on the exam just in case you forget it at that moment.
但在考试中我们会给出这个值,以防你当时忘记了。
麻省理工公开课 - 化学原理课程节选

Now Assouline is at it again, in search of investors for a new development in China.
FORBES: Fish and Game