Taking a lethal dose of sleeping pills is not allowed in any case.

任何情况下都不允许服用致死剂量的安眠药片。

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Yet, as far as we know, no one has yet received a lethal dose of radiation.

但是，尽管如此，到目前为止，就我们所知，还没有一个人因此而遭受致命的辐射。

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Prosecutors allege that Dr Conrad Murray gave Jackson a lethal dose of propofol leading to his involuntary manslaughter.

检方称肯拉德·墨利医生给了杰克逊致命的药剂异丙酚导致过失杀人。

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During the trial, Dr Murray's lawyers argued that Jackson self-administered a lethal dose of the drug while he was out of the room.

BBC: Conrad Murray guilty of Michael Jackson manslaughter

Even at the elevated levels found off the coast, the amount of caffeine is well below a lethal dose for marine life, Portland State said.

CNN: Researchers find caffeine in waters off Oregon

Prosecutors said Gosnell had run a filthy "house of horrors" with unqualified staff - including those who administered a lethal dose of sedatives to Karnamaya Mongar, a 41-year-old refugee from Nepal.

BBC: Kermit Gosnell guilty of three murders in late-term abortions - BBC News