They went at each other viciously.他们互相猛烈攻击。

Our neighbors were arguing again last night. They went at it for almost an hour.昨晚我们的邻居又吵架了，吵了将近一个小时。

They had to go at the problem from many different angles before they finally solved it.他们不得不从许多不同角度研究才最终解决了这个问题。

It was a tough job, and I was impressed by the energetic way he went at it.这是个苦差事，他的积极肯干给我留下深刻印象。