Citrus sinensis

例句：

1. 1.The citrus fruits are a popular dessert choice in many Asian countries.
   在许多亚洲国家，柑橘类水果是受欢迎的甜点选择。
2. 2. The orange tree is my favorite flowering plant.
   橙树是我最喜欢的开花植物。
3. 3. Oranges are rich in vitamin C and are often used in cooking.
   橙子富含维生素C，常用于烹饪。