weather是不可数名词。
weathern.天气；气象；气象预报；
v.(因受风吹、日晒、雨淋等，使)退色
The weather was very kind to us.
天气非常宜人。
The weather got so bad that we had to turn back.
天气变得非常恶劣，我们不得不循原路折回。
The weather was hot, without a breath of wind.
天气炎热，连一丝风都没有。
水利万物而不争,
而万物莫能与之争。
