n.榫眼
v.用榫接合
=mortice.
The cross-piece is mortised into the upright post. 横梁和立柱是用榫眼接合一起的。
vt.分期偿还；摊还
=amortize(美）.
adj.已摊销的；已摊提的；已分期偿还的
动词amortise的过去式和过去分词.
