牙签在英语中被称为 toothpick。例如：

1. I always keep a toothpick in my pocket in case I need to clean something from my teeth after a meal.（我总是在口袋里放一根牙签，以备饭后清洁牙齿之用）。

2. He is removing bits of food stuck between the teeth with a toothpick.（他用牙签剔除牙齿间的饭渣）。

3. She picked her teeth with a toothpick.（她用牙签剔牙）。