microbundle

例句：

1. 1. The drug is encapsulated in a small capsule for easy administration.
   该药物被包裹在一个小胶囊中，便于服用。
2. 2. Microencapsulation technology has been used to protect sensitive materials from damage.
   微胶囊技术已被用于保护敏感材料免受损害。
3. 3. The microencapsulation process involves coating the active ingredient with a protective layer.
   微胶囊化过程涉及将活性成分涂覆在保护层上。