under the table
非法、秘密地进行
口语·指贿赂或暗箱操作
英文释义
done secretly or illegally, typically involving bribes or illegal payments
例句
The contractor paid the official under the table to get the permit approved.
典故来源
源自非法交易中在桌下传递金钱或物品的行为，以避开他人视线。