tóu / zī / zhě / rèn / wéi / gǔ / jià / huì / xià / diē / yú / shì / xuǎn / zé / zuò / kōng / zhè / zhī / gǔ / piào投资者认为股价会下跌,于是选择做空这只股票。The investor expected the share price to fall and chose to sell the stock short.