In order to place a sell stop order you can use our sell stop-limit order function by setting the limit price to a relatively low price.

如要发出止蚀沽盘指令，阁下可选用限价止蚀沽盘并将限价设定为一个较低的价格。

youdao

Once the stop price is reached, the stop-limit order becomes a limit order to buy or to sell at a specified price.

一旦停止价格达成协议，限价订单成为限制为了购买或出售在指定的价格。

youdao

An alternative to a plain stop order is a stop-limit order, which includes a minimum price at which you want to sell the stock.

FORBES: Lessons From The Flash Crash