weather
US /ˈweð.ɚ/
UK /ˈweð.ɚ/

1.
天气
the state of the atmosphere at a particular place and time as regards heat, cloudiness, dryness, sunshine, wind, rain, etc.
:
•
The weather is beautiful today.
今天天气很好。
•
What's the weather forecast for tomorrow?
明天天气预报怎么样?
1.
侵蚀, 风化
wear away or change the appearance or texture of (something) by exposure to the air
:
•
The rocks have been weathered by wind and rain.
岩石被风雨侵蚀了。
•
The old wooden fence had weathered to a silvery gray.
旧木栅栏被风化成了银灰色。