retractable drawbar

例句：

1. 1. The car has a retractabledrawbar that can be used to securethe luggage.
   这辆车有一个可伸缩的拉杆，可以用来固定行李。
2. 2. The new bikehas a retractable drawbar thatmakes it easy to carry heavy loads.
   新款自行车有一个可伸缩的拉杆，使得携带重物变得容易。
3. 3. The toolboxhas a retractable drawbar thatallows you to easily open and close thelid.
   工具箱有一个可伸缩的拉杆，可以让你轻松地打开和关闭盖子。