单词 swing-tree 释义 swing-tree|swtri|= swingletree 2.1396–7Durham Acc. Rolls (Surtees) 214, iiij harpice cum iij Swyngtreys ferreis.1802James Milit. Dict., Swing⁓tree of a waggon.1812Sir J. Sinclair Syst. Husb. Scot. ii. App. 46 The..swing-trees, to w...