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。