nà / gè / cháng / qī / zǔ / ài / xiàng / mù / jìn / zhǎn / de / rén / yǐ / jīng / chéng / le / dà / jiā / yǎn / zhōng / de / ròu / zhōng / cì

那个长期阻碍项目进展的人，已经成了大家眼中的肉中刺。

The person who has long obstructed the project's progress has become a thorn in everyone's flesh.