Zhè tīnɡqǐlái hěn kěyí.
这听起来很可疑。
It sounds suspicious to me.
Notes:
这(zhè): this
听起来(tīnɡqǐlái): sound like
很(hěn): very
可疑(kěyí): suspicious
Example:
A:他说他昨天没有去酒吧。
Tā shuō tā zuótiān méiyǒu qù jiǔbā.
He said he didn't go to the bar yesterday.
B:这听起来很可疑。
Zhè tīnɡqǐlái hěn kěyí.
It sounds suspicious to me.