I'm looking for a translation of "无效".
Does that mean
Thanks for answers.
无效 can mean 'invalid' or "ineffectual/ unsuccessful"
球在哨响后才入球笼门，因此无效 - The ball was kicked in after the whistle, therefore, the goal is invalid
化疗电疗均告无效 - Both chemotherapy and electrotherapy have been ineffectual
抢救无效，病人当场死亡 - The emergency rescue effort was unsuccessful, the patient died on the spot
'invalid' should be a more proper one