If you are a drop of water,do you moisten [使…湿润] an inch of land?If you are a ray of sunlight,do you light up a bit of darkness?If you are a grain [粮食;谷物],have you nurtured a useful life?If you are a screw,will you stick to your post forever?No matter what position you are in,No matter what kind of work you are doing.
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