developmentalKK [dɪˏvɛləˋpmɛntəl] /dɪˌvɛləˈpmɛntəl/形容詞1發展的、發展上的The city is still at a developmental stage of its transport network.這座城市的交通網路仍處於發展階段。2發育的、成長的醫學、心理Doctors assess whether the child has reached key developmental milestones.醫生會評估孩子是否達到重要的發育里程碑。3研發的、開發階段的The engine is still developmental and not ready for production.這具引擎還在研發階段,尚未能量產。