tap ladle的用法和樣例：
例句
- There is an opening in the bottom of the ladle, called...zzle, which is sealed with a vertical refractory stopper.
盛鋼桶底有個叫作水口的孔，由一根直立的耐火材料做的塞棒堵住。 - In order to prevent the molten slag on the top of the steel from entering the ingot moulds, the steel is poured from the bottom of the ladle.
為了防止浮在鋼液表面上的熔渣進入鋼錠模，鋼液從盛鋼桶底部放出。
