Some birds fly in groups for safety, while others fly alone.

有些鸟类会为了安全而成群地飞行，而其它鸟类则独自飞行。

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Next, he planned to build his own plane and fly alone around the world.

接下来，他计划建造自己的飞机，独自环游世界。

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In 2007, Barrington Irving became the youngest person to fly alone around the world.

2007年，巴林顿·欧文成为独自驾驶飞机环游世界的最年轻的飞行员。

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Only six years earlier Charles Lindburgh became famous around the world as the first person to fly alone across the Atlantic Ocean.

VOA: special.2009.03.18

It was nineteen thirty-three. Only six years earlier Charles Lindburgh became famous around the world as the first person to fly alone across the Atlantic Ocean.

VOA: special.2011.04.27

He had just become the first person to fly a plane alone across the Atlantic Ocean, from New York to Paris.

VOA: special.2009.06.28

Some flight schools reacted immediately to the new threat of dangerous student pilots who, at some point, must fly alone to pass tests.

CNN: graphic

She really did fly alone.

WSJ: The Weekend Interview with Mark Boal: The Art and Politics of 'Zero Dark Thirty'

This man had heart surgery, and shortly afterward had been dropped off at the curb to buy a ticket with no reservation to fly to New Orleans alone.

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