1. 既然你不想说，我就不究根儿了。
Since you do not want to talk about it, I will drop the subject.
2. 究根儿在线翻译
2. 他无亲无故的，已经埋在了东直门外义地里，老头子由哪儿究根儿去？
He had no family or relatives and is already bruied in the paupers'cemetery outside Xizhimen, so where's the old man going to get the truth?