The estimated number of emigrants increased from an average of 20 000 a year in the early 1980s to about 60 000 a year in the early 1990s.是什么意思_The estimated number of emigrants increased from an average of 20 000 a year in the early 1980s to about 60 000 a year in the early 1990s.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句