掏鸟巢 掏鸟巢的英文 英语翻译 bird's-nest 拓展翻译 掏draw out; hollow out; pull out掏便宜货的人bargain hunter掏腰包dig down太阳鸟sunbird秃头鸟leatherhead脱氧鸟苷deoxyguanosine (dG,dGuo); dG脱氧鸟苷酸deoxyguanylic acid (dGMP); dGMP驼鸟毛尘肺ptilosis鸵鸟ostrich鸵鸟胃蛋白酶ostrich pepsin胎盘卵巢子宫内分泌学说P.O.U. theory