Packet switching service
[计] 包交换服务
🧩 词语组成解析
[计] 交换\\n[经] 转换, 调换, 调头
service
['sɝvɪs]
n. 服务，服侍;服务业;维修服务;服役;
vt. 检修，维修;向…提供服务;保养;满足需要;
adj. 服务性的;耐用的;服现役的;
serv服务+ice表名词，行为，状态 →服务
🗣️ 情景例句
He is on another line right now.
他正在接另一个电话。
He often fails to keep his word.
他常常不遵守诺言。
They also have the disadvantage of being an expensive form of transport.
飞机另一个缺点是昂贵。