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preoccupancyn.

英 priː'ɒkjʊpənsɪ | 美 pri'ɑkjəpənsi
中文n. 先入为主;全神贯注;极为忙碌(等于preoccupation)
词根词源
preoccupancy (n.)also pre-occupancy, "prior occupation," 1734, from pre- + occupancy.
关键词
preoccupancy