请问老师,A market-if-touched (MIT) order is a conditional order that becomes a market order when a security reaches a specified price. 但是讲义上说: executed at the best available price after a trade occurs at a specified price/at a price more favorable than the specified price.也就是已更好价格去成交。但是第一个定义是以市场价格成交。到底是按什么方式理解呢?谢谢