thumb tack

例句：

1. 1. I need to find a way to fix this leaky roof without damaging the house's integrity.
   我需要找到一种方法来修复这个漏雨的屋顶，而不损害房屋的整体结构。
2. 2.The carpenter used a thumb tack to hold the boards together before they were nailed.
   木匠用一个拇指钉在木板上固定好，然后再进行钉钉子。
3. 3.She applied a small thumb tack to the back of her dress to keep it in place.
   她把一个小拇指钉放在裙子后面，以保持其位置。