in the manner of a reptile; insidiously
in a harmfully insidious manner
r in a harmfully insidious manner r in a noxiously baneful way
insidiously
adv. 阴险, 狡诈, (疾病)不知不觉之间加剧, 伺机陷害, 毒而诱人, 隐袭, 隐匿
insidiousness
n. 潜伏, 阴险; 隐袭性