Monosystem
单系
🗣️ 情景例句
Are you listed?
在电话号码本上能找到你吗？
One should not run with the hare and hunt with the hounds.
不应两面讨好。
he knows while he looks at one side what the other side is like;
他看物体的一边时，便知道另一边是个什么样子。