auric potassium chloride

例句：

1. 1. The iron rusts easily in the rain.
   铁在雨中容易生锈。
2. 2. The rusted metal was removed from the car.
   生锈的金属被从汽车上移除了。
3. 3. The rusty old car is a symbol of time.
   这辆生锈的老车是时间的符号。