inject insidiously不知不觉地注入
report insidiously不知不觉地报告
begin insidiously不知不觉地开始
lace insidiously不知不觉地系上
attack insidiously不知不觉地攻击
promote insidiously潜伏地促进
plot insidiously不知不觉地绘制
use insidiously不知不觉地利用
rally insidiously不知不觉地集合起来
"these drugs act insidiously"
同义词：perniciously