sewin

例句：

1. 1. The dog was tied toa post with a rope.
   狗被一根绳子拴在柱子上。
2. 2. She fastened the door securely beforeleaving.
   她离开前把门牢牢地系上了。
3. 3. The carwas secured with a lockand chain.
   汽车用锁和链条固定住了。