All at once there was someone knocking on the door.

忽然有人敲门。

柯林斯例句

Somebody is knocking on the window.

有人在敲窗子.

《现代汉英综合大词典》

It'sounds like sb .'s knocking on the door.

像是有人在敲门.

《现代汉英综合大词典》

Please do not enter without knocking on the door.

进内请先敲门.

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Please do not enter before knocking on the door.

进来前请先敲门.

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Expect multinationals to be knocking on China's door, selling their services.

可以预计, 为了出售自己的产品,跨国公司正在叩响中国的门扉.

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The developers have actually sent a consultant round knocking on people's doors.

实际上,开发商们已派出一名顾问拜访人们.

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Listen! Someone is knocking on the door.

听! 有人正在敲门.

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Someone is knocking ( on ) the door.

有人在叩门.

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Now you're knocking on my door, trying to pick up and save your pride.

现在你来敲我的门, 只为重拾你的尊严.

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In the last few years, opportunity has been knocking on Ashton Kutcher's door.

在过去的几年里, 机会一直在敲阿什顿#库彻的大门.

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When the arrival of the ransom, sometimes money is indeed " come knocking on the door. "

当赎金到来时, 钱有时确实 “ 从天上掉下来 ”.

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He says knocking on doors for Mr Romney is easier than winning converts for his church.

他说为罗姆尼先生敲门比劝人改宗他的教堂要容易得多.

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