牛熊期权（Knock-out options）是一种有限风险仓位，让您能够充分控制您的保证金和风险。了解关于牛熊期权的所有信息，包括牛熊期权如何运作及如何交易牛熊期权。 牛熊期权（Knock-out options, 也常被翻译为触碰失效期权或敲出期权），是基于期权的一种差价合约。

"The bullies don’t stop hitting you because you’re nice to them. They stop hitting you when you knock them out cold." ...

Although plant cell-based bioproduction has advanced considerably during the past several years, certain elements remain largely unexplored.