• 深色土壤

Darko达尔科darkadj.黑暗的；深色的n.黑暗；暗处；深色调v.使变黑；变黑dark infrared oven暗红外线炉dark purple tongue舌质紫黯dark-adaptometer暗适应计dark-and-light明暗dark smoke puffing冒黑烟dark-spot signal黑斑信号dark reaction time暗反应时间dark-adapted eye[医] 暗适应眼dark dry technique阴干刺激法dark current pulse暗电流脉冲