求翻译：昨天下午在操场找到一个绿色书包。书包内有两本新教科书，练习本，袖珍英汉词典以及铅笔盒一个，请失主到高三年级办公室认领。是什么意思？

Yesterday afternoon in the playground to find a green bag. Bag has two new textbooks, exercise books, pocket-sized English-Chinese dictionary and a pencil box, please call the owner to the third-grade office claim.

Yesterday afternoon in the playground to find a green school bag. There are two of the bags, new textbooks, exercise books as well as suppressors pocket English-Chinese dictionary, a home run to reclaim the high school office.

Yesterday in the afternoon found a green book bag in the drill ground.In the book bag has two new textbooks, the exercise book, the pocket-sized English to Chinese dictionary as well as pencil case, ask the owner of lost articles to accept to the high the third year office.

Yesterday afternoon at the playground to find a green school bag. Bag has two new textbooks, exercise books, Pocket English-Chinese dictionaries, as well as pencil-box, ask the owner to the Office of the high grade claimed.

Found a green schoolbag on the playground yesterday afternoon. There are two new textbooks, the exercise-book, pocket English-Chinese dictionary and one pencil box in the schoolbag, ask the owner of lost property to go to the office of Senior Three's grade to claim.