in a pinch (US), at a pinch (UK)advadverb: Describes a verb, adjective, adverb, or clause--for example, "come quickly," "very rare," "happening now," "fall down."
informal (if necessary)
紧要的时候 jǐn yào de shí hòu
紧急情况下 jǐn jí qíng kuàng xià
At a pinch, we could fit another person in the car.