Asynchronous sound effects, on the other hand, are not matched with a visible source of the sound on screen.

另一方面，异步音效与屏幕上的可见声源不匹配。

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On the one hand, the elephants' main lake, their only water source (来源), dried up.

一方面，大象的主要湖泊饮水处，也是他们唯一的水源，已经干涸了。

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Forensic science has a lot of romantic literature behind it, with many fictional detectives stalking the pages of whodunnits magnifying glass in hand and nicotine-source in mouth.

ECONOMIST: Whose body of evidence? | The

After the publication of the book, a drama scholar wrote to Mr. Unsworth asking for his source on the hand-signal system.

WSJ: A Tribute to Barry Unsworth | Dear Book Lover

Google, on the other hand, is an open source platform company.

FORBES: Apple and Google: Why Current Market Share Results Don't Matter Yet, Part 2