Packet switching center
[计] 包交换中心, 分组交换中心
🧩 词语组成解析
[计] 交换\\n[经] 转换, 调换, 调头
center
['sentə]
n. 中心;（球队的） 中锋;中心区;中枢;
adj. 中央的，位于正中的;（在）中心的;
vt. 集中;使聚集在一点;定中心;居中;
vi. 居中，有中心，被置于中心;
🗣️ 情景例句
Many shopping malls and supermarkets can deliver goods straight to your door.
许多购物中心和超市提供免费送货上门服务。
You are luckier than I am.
你比我幸运。
I even went out at midnight with a torch and noted with satisfaction (and surprise) that the ants were still swarming around the sticky tape without being able to do anything about it.
半夜，我还拿着电筒来到花园里，满意地（同时惊奇地）发现那些蚂蚁还围着胶带团团转。无能为力。