a rain of bullets枪林弹雨
a rain of congratulations一连串/纷至沓来的祝贺
as right as rain一帆风顺，一切正常
be caught in the rain被雨淋着了
deposit rain下雨，降雨，人工播雨
get out of the rain躲雨；知道保护自己，有心计/心眼
in the rain在雨中，冒雨
know enough to come in out of the rain懂道理，能够自理，有心计/心眼
rain blood/tears血流如注/泪如雨下
rain buckets大雨倾盆，余下的很猛烈
rain cats and dogs大雨倾盆，雨下得很猛烈
rain down象雨点般落下
rain benefits on施恩惠于...
rain influence on对...施加恩惠
rain off/out因下雨而取消...
rain on雨点般落在...上面；纷纷落在...头上
rain or shine无论晴雨，风雨无阻；无论如何
rain pitchforks大雨倾盆，雨下得很猛烈
rain praise on对...赞不绝口
take shelter from the rain躲雨，避雨
It never rains but it pours.不鸣则已一鸣惊人.
