初步 (chū bù) means “initial; preliminary; tentative”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
经过初步调查发现了线索。
Jīngguò chūbù diàochá, jǐngfāng fāxiàn le yīxiē zhòngyào xiànsuǒ.
After a preliminary investigation, the police found some important clues.
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