I yelped and craned my head backward, trying to see what was going on.

我疼得直喊，努力把头转过去，试图看到背上到底怎么了。

youdao

An owl's head, for example, can twist so far round that it faces backward, but when the bird wants to look forward again, it must turn its head back the way it came.

比如说猫头鹰可以将正脸一直转到后脑勺的位置，但是如果它再想看到正前方的东西，那整个头部只能原路返回了。

youdao

Valves in the veins prevent blood from flowing backward toward the head, but if the valves don't close sufficiently, blood could seep back upward.

静脉中的瓣膜阻止血液倒流到脑部，但是如果瓣膜不足，血液会就会再次流到大脑。

youdao

I bent my head backward to drink in the stars, and clearly I heard a song so sweet and pure I had to hold myself to keep from breaking.

VOA: special.2009.02.14

In the 1968 Games, in Mexico City, the American high jumper Dick Fosbury won the gold medal by flipping himself over the bar head first and backward a technique now known as the Fosbury Flop.

NEWYORKER: Glory Days

The man falls over backward and his head hits the sidewalk so hard it can be heard on the video.

CNN: STORY HIGHLIGHTS

Left-arm seamer Aamer, who has just turned 17, persuaded Bopara to spear a catch to backward point where Shoaib Malik took a good catch at head height, a couple of yards to his left.

BBC: Revitalised England beat Pakistan