词典释义：
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What is he doing? He's finding the acoustic sweet spot.
他干嘛呢？他在找听觉最优点。
《The Big Bang Theory Season 2》《生活大爆炸 第二季》
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What is he doing in China? Who? Your Dad. He doesn't do anything in China. He's dead, my mother remarried.
嗯，他在中国做什么？谁？你爸爸。他没在中国做什么，他去世了，我妈妈再婚了。
《Like Sunday, Like Rain》《如晴天，似雨天》
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What is he doing? What, Emily, thinks Ross's furniture has got Rachel cootie? Calm down Joey.
他这是做什么？艾蜜莉觉得罗斯的家具会沾上瑞秋的虱子吗？乔伊，别激动。
《Friends Season 5》《老友记 第五季》
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There we are. A nice tree for you to live in. What is he doing? He's making a web, Peppa. Spiders live in webs and use them to catch flies.
就这里吧！这棵树很适合你居住。她在干什么啊？他在织一张蜘蛛网，佩奇，蜘蛛依靠网来生活，而且用它来捉住虫子，
《Peppa Pig Season 4》《小猪佩奇 第四季》
双语例句
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So what is he doing now?
所以他现在在做啥？
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What is he doing nowadays?
当今他在做些什么？
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Nate: What is he doing here?
他在这儿干吗?。
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What is he doing? He's washing the seal.
他正在做什么？他正在给海豹洗澡。
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And what is he doing in the tunnel?
他在隧道里干什么？
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"What is he doing there?" said the inspector.
他在那儿干什么？
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Who is the serpent? What is he doing? What's going on?
究竟这条蛇是什么来历，它做了什么，发生了什么？
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Look, it's a cat! He is running after a dog. What is he doing? He wants get the dog's tail.
看，那是只猫。他再追一只狗。他在干什么呢?他想拿到狗的尾巴。