While preparing to teach, they organize their knowledge and improve their own understanding.

在准备教学的同时，他们整理自己的知识，提高自己的认识。

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The plane, a Boeing 737, taking German holiday makers to the island crashed into a hillside as it circled while preparing to land.

这架带着德国度假者飞往岛屿的波音737飞机，在盘旋准备降落时撞到山坡上。

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While preparing to discuss the terms of a new position, she told her mentor she planned to ask for just two things.

当时她正在准备谈判新职位的入职条件，她告诉自己的导师，她只打算提两个要求。

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The survey revealed that just over half are working full-time, and 71% feel they should have done things differently while preparing to enter the real world.

FORBES: What College Graduates Wish They Had Done Differently

While preparing to pit a new brand with no heritage against European brands like Mercedes-Benz, Lexus decided it would have to build a perfect car--and a perfect retail experience.

FORBES: The Lexus Nexus

The number of American troops killed in Afghanistan has dropped sharply as international forces increasingly take a back seat while preparing to end their combat mission by the end of 2014.

NPR: Afghan Teenager Fatally Stabs US Soldier