duō nián / qián xīn yán jiū / zhī hòu / tā / jīng yú cǐ dào / chéng wéi / lǐng yù nèi de / zhuān jiā

多年潜心研究之后，她精于此道，成为领域内的专家。

After years of devoted research, she became expert in this area and a specialist in the field.