无效的最后数据值 Invalid Last Date Value
条约无效的后果与程序 consequences and procedures of invalidity
无后效 without aftereffect
事后无效 void after the fact
小板输注后无效 platelet transfusion refractoriness ; PTR
血小板输注后无效 platelet transfusion refractoriness ; PTR
马尔柯夫链的无后效性 non-aftereffect property of markov chain
校车事故发生后，12名学生立即被送往医院，其中8人治疗无效后死亡。
Immediately after the school bus accident, twelve students were sent to hospital, where eight died despite treatment.
有些人在使用某类药物一段时间感觉无效后，必须换另一种药物。
Some individuals must change medications after one drug appears to be or becomes ineffective.
不知所措的她等着救护车，陪着进了急诊室，抢救无效后，她又回到了酒吧。
Having no idea what to do, she waits for the ambulance, accompanies it to accident and emergency and then goes back to the pub after futile efforts at resuscitation.
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