hot dog1 hot sausage served in a soft bread roll, often with onions and mustard 热狗（中间夹有热香肠并常佐以碎洋葱和芥末的长圆面包）.2 (US infml 口) (used as an interj to express pleasure or surprise 用作叹词, 表示高兴或惊讶).
牛津英汉双解词典