The computer is freezing up, again — is it a virus?

电脑又死机了——不会是病毒在作祟吧？

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Lakes are freezing up later in the year, and spring is arriving earlier.

湖泊更晚结冰，春天提前到来。

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This Pavlovian technique resulted in the rats freezing up in nervous anticipation of the shocks every time they heard either sound.

这种巴普洛夫技术产生了这种结果：每次老鼠听到其中一种声音就会怕被电击而变得非常紧张。

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But then the financial crisis struck, freezing capital inflows as international credit dried up.

VOA: standard.2009.10.16

The EU has proposed freezing up to 900 million permits to tackle this oversupply.

BBC: Chimneys at coal-fired power station

The biggest blunder most presenters make is not humiliating themselves or freezing up on stage.

FORBES: How can I avoid making a bad impression? -Presentation Training

Dr. CORELL: Yes, the ice is melting much earlier in the year than in the past, and it's freezing up much later in the year.

NPR: Oceanographer Sees Real Effects of Climate Change