rusty sword meaning in English

生绣的剑

It is really foolish of you to buy such a rusty sword .
你真傻，买了一把生锈的剑。
My next care was for some ammunition and arms ; there were two very good fowling - pieces in the great cabbin , and two pistols , these i secur d first , with some powder - horns , and a small bag of shot , and two old rusty swords ; i knew there were three barrels of powder in the ship , but knew not where our gunner had stow d them , but with much search i found them , two of them dry and good , the third had taken water , those two i got to my raft , with the arms , and now i thought my self pretty well freighted , and began to think how i should get to shore with them , having neither sail , oar , or rudder , and the least cap full of wind would have overset all my navigation
这时，我只好用桨作锚，把木排一边固定在一片靠近河岸的平坦的沙滩上，以等待潮水涨高，漫过沙滩再说。后来，潮水果然继续上涨，漫上沙滩，等水涨得够高了，我就把木排撑过去，因为木排吃水有一尺多深。到了那儿，我用两支断桨插入沙滩里，前后各一支，把木排停泊好，单等潮水退去，就可把木排和货物品平安安地留在岸上了。