when the chips are down
在最困難的時刻或最關鍵的時候
口語·形容困境考驗
英文釋義
when a situation becomes difficult or challenging; when one is facing adversity or a crisis
例句
When the chips are down, you can always count on your best friend.
典故來源
源自撲克牌游戲,籌碼堆疊表示賭注已下,比喻危機時刻。