Pbx
[计] 专用小型交换机
🗣️ 情景例句
Here.
来。
All are not friends that speak us fair.
向我们说好话的并不都是好朋友。
In this way, we have learned all that we know of the laws of astronomy,
例如，用这种方法，我们完全掌握了天文学的规律。