聊天儿系统的英文：
chat system
n. 聊天；闲谈
v. （与…）聊天；闲谈
Chatting with a friend is a gas.
与朋友聊天是一件很愉快的事。
I had a chat with John.
我和约翰聊了会儿天。
Why not drop in for a chat?
为什么不过来聊聊天呢？
The interview resolved itself into a pleasant chat.
会见变成了愉快的闲聊。
NICK and Amber are chatting with Aaron online.
尼克和安铂在线上与艾伦聊天。
n. 体系，系统；设备；制度；方法；身体；次序
Is the system unstable?
是系统不稳定吗？
It was not a perfect system.
它不是一个完美的系统。
This is a sexpartite system.
这是一个由六部分组成的系统。
Anatomically, the nervous system is divided into the central nervous system and the peripheral nervous system.
解剖学上把神经组织分为中枢神经系统和周围神经系统。
disaccord between the economic system and political system
经济体制与政治体系间的不协调