blackout，physiological生理黑晕

飞机试飞员和宇航员在加速时出现的暂时性失明，由眼晴缺氧引起。

• pre-interview briefing
• prejudge
• prejudice
• prejudicial
• prelate
• prelaunch
• prelim
• preliminary
• prelimit
• prelude
• premarital
• pre-market opening mechanism
• premarriage health checkings
• pre-match
• premature
• premature birth
• prematurity
• premaxilla
• premedical
• premeditate
• premeditation
• premier
• premiere
• preminger，otto ludwig
• premise