变迁

变迁 [biàn qiān]

1. ■ transition; changes; vicissitudes; change in trends or conditions:

时世变迁 the changes of the times;

煤乡的变迁 changes in a coal-mining district;

大自然的变迁 the gradual changes of nature;

各种语言的语音总在不断变迁。 The speech sounds of all languages are gradually but constantly changing.