求翻译： 曾利用寒假的时间，在黑龙江齐齐哈尔市政工程设计有限公司，进行了为期两个星期的认识实习，在办公室老师的指导下，对CAD和PHOTOSHOP有了初步了解和操作是什么意思？

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 * has been taking advantage of the winter holiday time in the Heilongjiang Qiqihar municipal Engineering Limited, has conducted a two-week internship, in recognition of the Office, under the guidance of their teachers and PHOTOSHOP CAD to give a preliminary understanding and operating

 Once used the winter vacation the time, in the Heilongjiang Tsitsihar municipal engineering design limited company, has carried on two week understanding practices, in under the office teacher's instruction, had the preliminary understanding and the operation to CAD and PHOTOSHOP

Use of vacation time, Heilongjiang Qiqihar municipal engineering design limited, for a period of two weeks of practice on, under the guidance of the teacher in the Office, CAD and PHOTOSHOP have a preliminary understanding and operation

Has utilized the time in winter vacation, in engineering design Co., Ltd. of policy of Qiqihar City of Heilongjiang, the understanding carrying on two weeks of scheduling to last is practised, under the guidance of office teacher, have on CAD and PHOTOSHOP and understand and operate tentatively