sugar boiling

例句：

1. 1. When the sugar boils, it turns into a syrup.
   当糖煮沸时，它会变成糖浆。
2. 2. The sugar simmered in the pot until it turned into a sticky paste.
   糖在锅里慢慢熬制，变成了黏糊糊的糖浆。
3. 3. To make caramel, you need to boil sugar and water together.
   要制作焦糖，你需要把糖和水一起煮沸。