ha-ha/ˈhɑ:hɑ:; `hɑˌhɑ/ nditch with a wall or fence in it, forming a boundary to a park or garden without interrupting the view （有墙或篱筑於其间的）壕沟（作公园或花园的边界而不致妨碍视线）.
牛津英汉双解词典