求翻译：1828年由韦伯斯特花费半生心血编写的,开美国英语编撰之先河，被后人堪为美国英语形成的重要标志。是什么意思？

1828 Webster spent half his age to write << English Dictionary >> open the English compilation of the first of its kind in the United States, descendants worthy of an important symbol of American English.

By 1828 Webster's effort spent half of the United States >> >> to English dictionary compiled by the United States English River First, for those who are after a United States English.

In 1828 spent the half a lifetime painstaking care compilation by the webster << the American English dictionary >>, opened the American English to compile the beginning of a matter, is endured by the posterity the important symbol which formed for the American English.

1828 Webster spent half-written << of United States english dictionary >>, opens the United States compiled by English precedent, by later generations for United States English form of vital signs.

正在翻译，请等待...