butter stool的用法和樣例：
例句
- Having creamed off the top of the milk,Mother made butter with this cream.
從牛奶上層提取了奶油之后，母親便用這種奶油制作黃油。 - The Duchess apparently became hungry in the afternoon and asked for some tea, bread and butter and cake to be brought to her room.
公爵夫人每到下午便感到百無(wú)聊賴(lài)甚至饑腸轆轆，便讓女仆準備一些差點(diǎn)，面包，黃油以及蛋糕送往她的房間。
