suspicious

• 历史可疑的人

  person with a shady past

• 认为某人可疑

  think someone is suspicious

• 看不出有什么可疑的地方

  can't see anything fishy

• 他的神情可疑。

  He looks suspicious.

• 他的形迹有点可疑。

  He's acting a little bit suspiciously.

• 他感到可疑。

  He felt suspicious.

• 他的这些行为确实可疑。

  His conduct here was really questionable.

• 难道你不觉得可疑吗？

  You mean that you don't feel anything's wrong?

• 一切竟能这样顺利，这确实可疑。

  It is really suspicious that everything is going this smoothly.

• 一切能否这样顺利，这倒是可疑的。

  It's very dubious whether everything can go this smoothly or not.