不能维持自主呼吸Inability to Sustain Spontaneous Ventilation
自然发生spontaneous generation
任意的，自发的spontaneous
放大自发射amplified spontaneous emission
自动去极化spontaneous depolarization
自发反应spontaneous reaction
自愿呈报制度spontaneous reporting system voluntary
吐血衄血blood ejection and spontaneous external bleeding