to get down to business进入正题
to get down to sth开始认真对待
to get down to bedrock追根究底
to get down to work静下心来工作
accustomed to get down to着手做
get down to business办正经事;言归正传;开始谈正事;认真办事
get down to sth开始认真对待;开始认真;开始干某事;着手做
get down to doing开始认真做;动手做;着手做;开始做某事
bend down to get弯腰去拿