杰克被一只没被拴住的狗追赶。Jack was chased by a loose dog.别担心装载量大, 它已经用链子拴住了.Don't worry about the heavy load, it's chained down.门用一段尼龙绳拴住了。The door had been tied shut with a length of nylon cord....

“拴住”的英语可以翻译为：tie down ...