stop loss orders

例句：

1. 1.To prevent losses, we need to place stop loss orders before the market opens.
   为了防止损失，我们需要在市场开盘前设置止损订单。
2. 2. The trader placed a stop loss order at $50 per share.
   交易员将止损订单设定在每股50美元。
3. 3. The investor decided to take a position in the stock after placing a stop loss order at $40 per share.
   投资者在股票价格达到每股40美元时决定买入该股。