benign/bɪˈnaɪn; bɪ`naɪn/ adj1 (of people or actions) kindly; gentle （指人或行为）慈祥的, 和善的.2 (of climate) mild; pleasant （指气候）温和的, 宜人的.3 (of a tumour, etc) not likely to spread or recur after treatment; not dangerous （指肿瘤等）良性的, 无危险的.
牛津英汉双解词典