1. 轻信的：credulity 易信,轻信 | credulous 轻信的 | creed 信条

2. 易被瞒的：credulous 轻信的 | credulous 易被瞒的 | credulousgullible 易受骗的

3. 容易相信别人的,易信的：testimonial 证明书,奖状 | credulous 容易相信别人的,易信的 | news media coverage 新闻媒体报导

1. 轻信的;易受骗的
If you describe someone as credulous, you have a low opinion of them because they are too ready to believe what people tell them and are easily deceived.

e.g. ...quack doctors charming money out of the pockets of credulous health-hungry citizens.
从那些渴望健康而又容易上当受骗的市民那里骗钱的江湖郎中

adj

1. disposed to believe on little evidence

e.g. the gimmick would convince none but the most credulous

2. showing a lack of judgment or experience

e.g. so credulous he believes everything he reads