thumbtack

1. 图钉
   A thumbtack is a short pin with a broad flat top which is used for fastening papers or pictures to a board, wall, or other surface.

in BRIT, use 英国英语用 drawing pin

1. Etsy, airbnb, Uber, thumbtack are all emerging businesses using network effects to build sustainable businesses.
   Etsy、Airbnb、Uber和Thumbtack都是使用网络效应，打造可持续业务的新兴企业。
2. With New York easing its way into spring, being outdoors under a blue sky is almost as refreshing as the chance to stab a thumbtack into a fat, balding, caricature of a boss.
   伴因为纽约逐渐进入春天，在蓝天下的户外活动就和把钉子钉进一个肥胖，秃顶的漫画老板的身上一样让人觉得过瘾。
3. A bright yellow pencil, a blue thumbtack;
   黄色铅笔立得高，蓝色图钉有妙用。
4. Now many people begin trying to thumbtack the candle to the wall. Doesn't work.
   许多人尝试用图钉把蜡烛钉在墙上，行不通；
5. "Ouch!" cried the principal." There is a thumbtack in this chair!"
   “哎呦！”校长叫道，“这把椅子上有个图钉！”
6. He affixed the postcard to the wall with a thumbtack, and then settled down and continued translating Richthofen's China.
   他用图钉把这张明信片钉在墙上，然后继续翻译李希霍芬的《中国》。
7. He affixed the picture to the wall with a thumbtack.
   他用图钉把图片钉到墙上。
8. He pinned up the notice with a thumbtack.
   他用图钉将通知挂起来。
9. The thumbtack pricked his index finger.
   大头针扎了他一下手指。
10. Magnet, pick up, screwdriver, thumbtack, paper clip
    磁铁，吸起，螺丝刀，图钉，回形针
11. I press the thumbtack into the board with thumb.
    我用大拇指将图钉按在木板上。
12. Conclusion The OFDM signals with a generalized chirp-like sequence ( P4), a generalized poly-phase barker sequence and a poly-phase Golomb sequence exhibit thumbtack ambiguity function, their peak-to-average power ratios can be maintained below 2, which are the optimal signals for OFDM multi-carrier TDD.
    结论子载波上发送相位编码序列为广义类chirp序列（P4码）、广义多相巴克码的正交频分复用多载波信号具有图钉形的模糊函数，峰均比PAPR<2是多载波探测的优选波形。
13. Methods: 1. Three deerskins ( drown on 7 mm × 7mm square reseaus) was pegged on the board by thumbtack. Then line scar and imperfects of rhomboid or rounded were made in the deerskins.
    方法：1.将鹿皮（标有7mm×7mm正方形网格）固定于木板上，然后在网格上分别设定线性疤痕、菱形或圆形缺损。

noun

1. a tack for attaching papers to a bulletin board or drawing board

   Synonym:    drawing pinpushpin

verb

1. fasten with thumbtacks
   1. The teacher thumbtacked the notice on the bulletin board