求翻译：在期间通过各种考试取了英国ＧＬ船级社三类焊工证书，英国ＧＬ下行焊接证书，并获得国家论证的金属焊接切割作业特种操作证，以及中级职业资格证书是什么意思？

During the exam taken by all three types of welders the UK Register of Shipping Certificate GL, GL England down welding certificate, and proof of national specialty metal welding and cutting operations operating permits, and intermediate vocational qualification certificate

Through a variety of examinations taken during the British GL classification category 3 British GL welder certificate, the certificate of welding, received the national demonstration of metal welding cutting operations, as well as special operating permit mid-level vocational qualification certifica

In period has taken the English GL Classification society three kind of welder certificates through each kind of test, the English GL downward welding certificate, and obtains the national proof the metal welding cutting work specially to hold testifies, as well as intermediate professional credenti

Through a variety of exams taken during United Kingdom GL three class welder certificates of classification societies, United Kingdom GL downward welding certificate, metal welding and cutting jobs and access to national demonstration of special action card, as well as middle-level professional qual

During the exam taken by all three types of welders the UK Register of Shipping Certificate GL, GL England down welding certificate, and proof of national specialty metal welding and cutting operations operating permits, and intermediate vocational qualification certificate