to suspect something wrong or dishonest
怀疑某事不对或不诚实 (huáiyí mǒu shì bù duì huò bù chéngshí)
"I smelled a rat when he offered me free tickets."
"当他给我免费票时，我感觉不对劲。" (dāng tā gěi wǒ miǎnfèi piào shí, wǒ **wén dào lǎoshǔ**.)
without any logical reason to doubt; with full certainty
to remain behind or hesitate to act
feeling emotional or about to cry
to join or agree with a group or plan
to decide that something is not possible
to increase the level of risk or difficulty
