bound: n.〔pl.〕1.界限,界线,限度。2.边界,边境;边界线内的领土。3.区域,领域,范围。短语和例子the bounds of space and time 时空范围。 the farthest bounds of the ocean 大洋最远的界限。 beyond the bounds of 越出…的范围以外,为…所不及。 break bounds 越轨;过度,逾限;【军
Book sewing machine is one kind of book binding machines , by which the gathered signatures in paginal order from the collecting machine can be sewed to from book blocks 锁线机是将配页机按页码顺序已成册的书帖,通过锁线制成书芯的机械。