◆idyllic adj. 田园诗的(like a description of the country life in a poem)
Eg: He is leading an idyllic life. 他过着田园诗般的生活。
◆dubious adj. 可疑的,怀疑的(not certain and slightly suspicious about sth; doubtful) 联想: dubious
be dubious about/of 对...怀疑,对...不肯定,主要表示不肯定的,不确定的
Eg: I am dubious about her motives. 我怀疑她的动机。 suspicious / doubtful:suspicious语气比doubtful肯定
Eg: It's very suspicious that she was in the house when the crime happened.
I am not sure about your ability to do so. 或者:I am doubtful of your ability.
我们可以看看这两个词对应的动词:doubt / suspect
Eg: I suspect that he stole the car last night. 语气较肯定的猜疑
I doubt whether he stole the car. 语气不太肯定 questionable强调质疑,有问题的,值得争议的
This is a questionable conclusion / decision. skeptical 怀疑论的,怀疑的 (与suspicious意思接近,但属于正式用法)
Eg: Your idea is skeptical.