追根溯源
zhuīgēnsùyuán
ㄓㄨㄟ ㄍㄣ ㄙㄨˋ ㄩㄢˊ
- 1to pursue sth back to its origins
- 2to trace back to the source
- 3to get to the bottom of sth
Example
若追根溯源,絕大多數美國人都是移民。
ruò zhuīgēnsùyuán juédàduōshù Měiguórén dōu shì yímín
Most Americans are descended from immigrants.