And, diseases sometimes kill large Numbers of lions. Infectious animal tuberculosis, for example, has established itself as a threat to lions in southern Africa.

而且，疾病有时也使大量的狮子死亡。感染的动物例如结核病已经形成了对南部非洲狮子的威胁。

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By randomly and uniformly sampling the threat hit locations, the expected number of hits required to kill an aircraft can be given and the aircraft equivalent singly vulnerable area can be attained.

通过对威胁的打击点进行随机均匀抽样来获得导致飞机杀伤的期望打击数目，从而可以计算飞机等效单一易损面积。

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Security was stepped up the following year after Osama bin Laden issued a general threat to kill US military personnel.

BBC: How the US became a target

Ms Landa's father has also been charged with making a threat to kill Harjinder Singh and unlawful possession of a knife.

BBC: Kidnap accused family 'did not accept partner'

The parents paid the ransom without informing the police, having believed the abductors threat to kill their child if the police were involved.

FORBES: Fact and Comment