[] () () a situation when a company suddenly and unexpectedly buys a large number of shares in another company at the beginning of a day's business on the stock exchange黎明突袭；开盘抢购（在股市开盘后突袭式大批买进另一公司的股票）◆The firm mounted a dawn raid on shares in the retailer, and is now likely to make a full takeover bid. 这家公司对这零售商的股票发动了黎明突袭，现在则可能要进行全面收购了。