packing service的用法和樣例：
例句
- The data link layer provides a service to the network layer by encapsulating the network layer information in a frame.
資料鏈結層透過將網路層資訊封裝入訊框的方式，提供服務給網路層。 - Dai Nippon business card printing and membership card which will provide on making this is offeris nmsio and back the whole service.
大日本制卡和會員卡製作此次將提供的是背面封裝材料和背板合為一體的服務。
