To be on guard against theft, the school has issued regulations specifying the duties of the door keepers.

为了防止盗窃，学校已经制定规章制度，明确规定了大楼看管员的职责。

youdao

To be on guard against theft, the school has issued regulations specifying the duties of the door keepers.

为了防止盗窃，学校已经制定规章制度，明确规定了大楼看管员的职责。

youdao