在人类历史长河中，手写语言演化了不仅仅一次。
Written language may have evolved more than once in human history.
在人类历史长河中，翻译人员在文化和语言进步的过程中，扮演了重要的角色。
The service that translators render to enhance cultures and nurture languages has been significant throughout history.
在漫长的历史长河中，艺术家、诗人和剧作家在人类对于爱的理解上做出了巨大成就。
OVER the course of history it has been artists, poets and playwrights who have made the greatest progress in humanity's understanding of love.
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