2009年2月18日是二十四节气中的雨水。一般来说，每年公历2月18日前后为雨水节气。雨水节气有两层含意：一是天气回暖，降水量将逐渐增多；二是降水形式的变化，雪将渐渐变少，雨水要多起来了。
        雨水之后，天气常常变化不定，这是全年寒潮过程出现最多的时节之一，忽冷忽热，乍暖还寒的天气对已萌动和返青生长的作物、林、果等的生长以及人体的健康危害很大，保暖、祛湿就显得格外重要了。

Rain Water

February 18, 2009 is the day of rain water in 24 solar terms. Generally speaking, it comes around February 18 each year in the Gregorian calendar. There are two meanings associated with the day of rain water. First, the temperature becomes warmer and the amount of rainfall gradually increases.
After the day of rain water, the weather is often quite unpredictable. Cold wave appears more often in this season than in any other seasons. It is sometimes warm and sometimes cold. The unpredictable weather is harmful for the growing plants, trees and fruits and even human body. Therefore, it is very important to keep warm and decrease humidity.

• amount [ə´maunt]   n.总数；数量 v.合计   (初中英语单词)
• rainfall [´reinfɔ:l]   n.雨量   (初中英语单词)
• harmful [´hɑ:mful]   a.有害的   (初中英语单词)
• therefore [´ðeəfɔ:]   ad.&conj.因此；所以   (初中英语单词)
• decrease [di´kri:s, ´di:kri:s]   v.&n.减少；减退   (初中英语单词)
• calendar [´kælində]   n.日历；月历；历法   (高中英语单词)
• speaking [´spi:kiŋ]   n.说话 a.发言的   (英语六级单词)
• humidity [hju:´miditi]   n.湿气；湿度   (英语六级单词)