safety pin

例句：

1. 1. She fastened the button on her shirt with a safety pin.
   她用一个安全别针把纽扣固定在衬衫上。
2. 2. The woman used a safety pin to secure her hair in place.
   这位女士用一个安全别针来固定她的发型。
3. 3. He wore a safety pin as a decorative item around his neck.
   他脖子上戴着一个作为装饰的安全别针。