red eyes and eye pain [医药科学]目赤目痛red eye red envelope 红包red ensign n. 英国商船旗red elm red earth 红土，[土壤] 红壤red dye 人造红色色素red dwarf star red dwarf [天] 红矮星（表面温度较低且亮度较弱的恒星）red dust red drum red dragon centre red dragon 红龙；红龙石red dp alert [能源科学技术]红色动态定位警报red dogwood red dirt road red dirt red devil maple [经济学]紫恶魔槭red devil red delicious apple 蛇果