求翻译：于2011年7月至8月期间，在北京桃李书店实习，主要参与了该书店的库存商品的盘点核对，盘亏商品的账务处理；协助该单位会计编制会计凭单、账务处理等项工作。是什么意思？

In July 2011 to August, in Beijing, Tao Li bookstore internships, mainly involved in the bookstore's inventory of goods inventory check, shortage of commodities accounts processing; to assist the preparation of the accounting unit of accounting vouchers, accounting treatment and other work .

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In from July, 2011 to August period, in the Beijing Students Bookstore practice, mainly participated in this bookstore's stock commodity stocktaking reconciliation, loss commodity bookkeeping processing; Assists this unit accountant to establish accountant the certificate, bookkeeping processing and

In the period between July 2011, peach and plum Bookstore practice in Beijing, mainly involved in the bookstore inventory check of inventory, inventories of goods account processing; assist the accounting prepare accounting vouchers, account management and other work.

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