Of course, they have promised to do something to prevent the water from being polluted.
当然，他们会承诺采取措施来保护水污染。
Something You cant competent, do not promised to others easily; once promised to others, It is necessary to practice your promise.
自己不能胜任的事情，切莫轻易答应别人；一旦答应了别人，就必须实践自己的诺言。
Something You cant competent, do not promised to others easily; once promised to others, It is necessary to practice your promise.
自己不能胜任的事情，切莫轻易答应别人；一旦答应了别人，就必须实践自己的诺言。
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