The direction or point on the mariner's compass halfway between southwest and south-southwest, or 146°15′ west of due north.西南南：位于西南和西南以南正中间的航海罗盘方位，或指正北偏西146°15′
adv.（副词）adj.（形容词）abbr. SWbS【缩写】
Toward or from southwest by south.西南偏南的（地）：向西南偏南的（地）；来自西南偏南的（地）