in a difficult situation where any choice you make will have negative consequences
进退两难
"I'm caught between a rock and a hard place - both options are terrible."
"我进退两难，两个选择都很糟糕。"
to reintroduce something gradually
to join others in doing a task or helping
too difficult to understand or achieve
to signal someone to stop, especially a vehicle
to manage to survive under pressure or financial difficulty
someone who looks innocent but might not be
