kē xué jiā / tōng guò / kòng zhì / hé fēn liè / lái / wéi chí / fǎn yìng duī / de / wěn dìng / yùn xíng科学家通过控制核分裂来维持反应堆的稳定运行。Scientists maintain reactors' stable operation by controlling nuclear fission.