second hand?second-hand?有连字符吗?求词性和用法?

两者都有,如下
second hand
n.中间人,助手,旧货
参考例句
He said his uncle went to work in a second-hand car.
他说他叔叔开一辆二手车上班.
I made a great find in that second-hand bookshop yesterday.
我昨天在旧书店找到一本很宝贵的书.
This is a second-hand bookstore.
这是家旧书店.
Your father's honour is to you but a second hand honour.
父功不荫子.
I only heard the news at second hand.
我只是间接听到这个消息的.
Most of our knowledge is at second hand.
我们的大部分知识是间接的.
I don't give much credence to tips obtained at second hand.
我对于间接得到的秘密消息不太相信.
I stumbled upon the rare book in a second-hand bookstore.
我在一家旧书店偶然找到这本珍贵的书.
second-hand ['sekənd'hænd]
adj.二手的
参考例句
I picked up the book in a secondhand bookstore.
我在一家旧书店里偶获此书.
He is in the secondhand car trade.
他是从事旧汽车贸易行当的.
He said his uncle went to work in a second-hand car.
他说他叔叔开一辆二手车上班.
I made a great find in that second-hand bookshop yesterday.
我昨天在旧书店找到一本很宝贵的书.
This is a second-hand bookstore.
这是家旧书店.
Your father's honour is to you but a second hand honour.
父功不荫子.
I only heard the news at second hand.
我只是间接听到这个消息的.
Most of our knowledge is at second hand.
我们的大部分知识是间接的.