Be alert in your observations. Look for similarities, differences, as well as unique and distinguishing features in situations and problems.

要留意所观察的对象。找出情况与问题中的相似处、不同处以及独特的显著特征。

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In practice, you'll need to stay sharp; many chefs still seem to believe that chicken and ham sprout in vegetable patches. But it really pays to be alert in Germany.

实际上，你得擦亮双眼，很多厨师认为鸡肉和火腿是算蔬菜类的~ ~特别是在德国。

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Predictions can also be used in alert conditions, enabling users to create notifications that will be sent when predictions indicate problems or opportunities.

还可以在警报条件中使用预测，使用户能够创建在预测指示问题或机会时发送的通知。

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General Fonseka,in the letter, says Sri Lanka asked India on October 15 to place troops on alert in case they would be needed to intervene to foil a coup on the island.

VOA: standard.2009.11.14

"I hope that what a study like this will do would be to help alert clinicians, residents in training, and medical students that severity is an important factor to consider in planning treatment,".

VOA: standard.2010.01.08

He is appealing to the public to be alert in Kruger park and try not to get too close if they see an elephant approaching on the road.

NPR: South Africa: Elephant Overturns Vehicle

There seems little doubt that the barriers, trenches and barbed wire in place near the church can stop the Orangemen forcing their way through, but Mr MacCionnaith is warning local people to be on alert in case there's a re-run of the scenario in 1996 when the decision to block the parade was eventually reversed.

BBC: Day of reckoning passes peacefully

That's why parents need to be alert to symptoms in themselves as well as their children, says Patti.

CNN: 10 infants dead in California whooping cough outbreak