chill nail

例句：

1. 1. The car was parked under a tree to cool down before the race.
   赛车在比赛前被停在树下以冷却。
2. 2.The workers used cooling nails to hold the wooden beams together.
   工人们使用冷却钉子来固定木梁。
3. 3. The ice cream truck had a chill nail that could be used to freeze drinks quickly.
   冰淇淋卡车有一个冷却钉，可以用来迅速冷冻饮料。