adj.鏈接的；受束縛的

動詞chain的過去式和過去分詞.

Release the dog. He has been chained up for hours. 把狗放開，它已被拴了幾個鐘頭了。

The dog was chained, so how did it get free? 狗拴著鏈子，是怎麼掙脫開的呢?

He chained his bicycle to the post. 他把自行車拴到柱子上。

He is chained to his work. 他工作忙得不能分身。

adj.解放的；無拘束的

動詞unchain的過去式和過去分詞形式.