拉拉链

例句：

1. 1. She opened the door and pulled thechain to let in the fresh air.
   她打开门，拉上链条，让新鲜空气进来。
2. 2. The designer used a newtype of zipper for this season's collection.
   设计师为这个季节的系列使用了一种新的拉链。
3. 3. The child was soexcited that he couldn't wait totry on his new school uniform with thezipper.
   孩子太兴奋了，迫不及待地想穿上带有拉链的新校服。