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(guò)將網(wǎng)路層資訊封裝入訊框的方式，提供服務(wù)給網(wǎng)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(huì )員卡制作此次將提供的是背面封裝材料和背板合為一體的服務(wù)。
