関連ワード:  what does 1 of rain mean    what does 1 inch of rain mean    what does 1 mm of rain mean    what does 1 cm of rain mean    what does 1 chance of rain mean    what does 1 mm of rainfall mean    what does 1 2 inch of rain mean    what does one drop of rain mean    what does 1 percent rain mean    what does 1 precipitation mean