HSK 7-9
八成
bāchéng数量副
eighty percent; most probably; most likely
看这乌云今天八成会下雨。
Kàn zhè wū yún jīn tiān bā chéng huì xià yǔ.
Judging by these dark clouds, it will most likely rain today.
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Appears across levels (7-9) in the HSK 3.0 word list.