get down to

开始, 着手

例句与用法：

Let's get down to (discussing) the nitty-gritty.

咱们著手探讨实际情况吧。

That's enough fun and games! Let's get down to work.

别再玩儿了! 咱们安下心来工作吧。

Let's get down to business.

让我们言归正传吧。

Let's get down to the work[problem].

咱们开始来进行这项工作[解决这个问题]。

I must get down to study tonight, as I have gotten exam next week.

我必须今晚开始认真学习，因为下周要考试。

I wish he'd stop mucking about and get down to some serious work.

我希望他不要再吊儿郎当，开始认真地做点工作。

详细释义：

开始认真对待

He got down to his work after the holidays.

度假之后他开始专心工作。