pull at/on sth

• 拉； 拖

pull at/on sth的用法和样例：

例句

1. He gave a strong pull at the rope.
   他用力拉了拉绳子。
2. Let's pull away the wrapper first.
   我们先把包装纸拉掉。
3. The disease can run on for months.
   这病能拖上几个月。
4. After much delay, he finished his paper at last.
   拖了那么久，他终于完成了论文。