This article presents a review of language attrition research, including its main themes and significance, problems and difficulties as well as its early developments and present situation.

本文概述语言耗损研究的历史与现状，包括语言耗损研究的主要内容和意义，以及目前存在的若干问题和难点。

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As early as the eighteen eighties, two new technical developments made these taller buildings possible.

VOA: special.2010.03.31

Boston's Route 128 was home not just to the minicomputer revolution but to early developments in word processing, spreadsheets, networks and computer-aided design.

FORBES: Cool Heads

While the book has provided some useful insight into the early developments of American higher education, I was taken aback when I came across a passage discussing the meager pay of college faculty during the 1790-1869 period and decided that some simple economic lessons are in order for our historians.

FORBES: Simple Economics Lessons for Two Historians

Boeing has become an early victim of these developments.

FORBES: New Radio Could Revolutionize Combat for U.S. Forces