例句：
The staff are very friendly.
这些工作人员非常友好。
Godfrey had been friendly to me.
戈弗雷过去曾经对我是友好的。
His smile was warm and friendly.
他的微笑热情而友好。
They say we're cold, reserved, unfriendly.
他们说我们冷漠、保守、不友好。
It was not an unfriendly grunt, but it was a grunt.
这不是不友好的咕哝，但它是一声咕哝。
If you know what kind of people are unfriendly, just stay away from them.
如果你知道什么样的人不友好，就远离他们。