本底调查 Save Sign in to save words Traditional (Taiwan): 本底調查 běndǐdiàochá ㄅㄣˇ ㄉㄧˇ ㄉㄧㄠˋ ㄔㄚˊ background investigation Character by character 本(běn)root 底(dǐ)bottom 调(diào)transfer 查(chá)research A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0