他在睡觉，他的头后仰靠在电线杆上。
他让卡普拉克的头后仰，小心地捏住她的鼻子，向她嘴里吹气。
He tipped Carpluk's head back, carefully pinched her nose, and breathed several puffs of air into her mouth.
静态平衡时，头后仰对前庭器官的干扰效果较为明显，但动态时干扰效果明显较弱。
In static balance, head extension has an obvious disturbing effect on the vestibular organ, but in dynamic balance, it has a weaker disturbing effect.
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