Have people been suspicious about this new approach?

人们对这种新方法有怀疑吗？

Amy, this is crazy.You have nothing to be suspicious about.

艾米这太夸张了！你根本不用怀疑什么。

I'm suspicious about what it means for a sitting US president to visit North Korea. I'm quite negative about it.

拜访朝鲜对美国在任总统的意义为何？对此我很怀疑，我觉得情况不乐观。

They were suspicious about my past.

【suspicious】他们对我的过去表示怀疑。

Because I think this character is going to be suspicious about stuff.

我认为这个角色应该怀疑一切。