under-the-table deals

... 未成年喝酒 under-age drinking 台底交易 under-the-table deals 未成年少女 underage girls ...

 under the table

under the table 台底交易 When's the big day? 哪天办喜事?

 under-the-counter

... Under Subscribed 认购额不足 under-the-counter 柜台下交易/台底交易 Underwriter 包销商 ...