He was thinking of fleeing for his life, when he finally saw the snake glide under the door-first its head, then its body, then its tail.

他正琢磨着是不是要先逃命，这时终于看见了蛇从房门下面悄悄的爬进来，先是脑袋，然后是身子，最后是尾巴。

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As I opened the garage door, I startled a large moth, which, upon spreading it's wings, displayed a bright red "tail" hidden by the motley brown wings, more a "butterfly" than a moth.

当我打开车库大门的时候，我惊起了一只大飞蛾。当它伸展开翅膀时，可以看到一条鲜红色的“尾巴”隐藏在它那斑杂的棕色翅膀上。

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Space shuttle Discovery's tail fin clears the hangar door of Orbiter Processing Facility-2 at NASA's Kennedy Space Center in Florida.

佛罗里达周nasa肯尼迪航天中心，发现号航天飞机的垂直尾翼正通过OPF - 2机库大门。

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The wolf is at the door, but he is wagging his tail.

NPR: Excerpt: 'All Art Is Propaganda'

He unlatched the gate, they pushed it open enough to slip in, nose to tail, trotted down the path to the shed door.

NPR: Excerpt: 'The Broken Shore'

In terms of design, the A400M has a classic high wing configuration, fuselage with ramp and large rear door, high flotation retractable landing gear and "T" tail.

BBC: A400M: Military workhorse