"Optional" means: select any one or several in a group.

optional

Explanation:

1, selected, delegated. "Books are salty and virtuous," Confucius said. "Only when officials are talented can they choose."

2, let the choice. Qing Li Yu's design of meaning: "You two are swept away. When you are displaced, you can choose anything."

Pinyin: "rènxu?n".

English translation: "optional".

Make sentences:

1, these two questions can be done together at will.

2. All the snacks here are particularly delicious.

You can choose two recipes, and I can make them both delicious.

4. You can make sentences with either word "Beautiful" or "beautiful".