| 释义 |
| | | | NOUN | | | | | 1 | the activity of buying and selling company shares before they are officially available 灰市（公司股票正式上市前的股票交易） | | | | 2 | the business of secretly buying and selling goods in a way that is not illegal but that is considered morally wrong 灰色交易（虽不合法但也不违法的秘密商品交易） | | |