They used a high dose of antibiotic to kill the native gut bacteria and then fed those mice fecal material from a protected strain.

他们用高剂量的抗生素来杀死易得病小鼠肠道里原生的细菌，然后从其他受保护的小鼠身上获取得的排泄物来喂那些小鼠。

youdao

The former Soviet Union is thought to have weaponised a strain of Marburg into an airborne powder: a single particle in the lungs could kill.

据说，前苏联将马尔堡菌株与一种空投粉末进行了混合，这样人只要吸入这种粉末一颗微粒就会死亡。

youdao

That would allow the herbicide to be sprayed on a pond to kill invading wild algae while leaving the fuel-producing strain unhurt.

这样就可以在培养池里施用除草剂，杀死入侵的野生藻，使培养的生产燃料的品种不受伤害。

youdao

Bush has said any effort to stall or kill the deal would strain ties with a vital Arab ally in the war on terrorism.

CNN: UAE firm to transfer port operations to 'U.S. entity'

The puritanical strain of Islam fostered by the state, sometimes called Wahhabism, was breeding extremists who were willing to kill even Muslims for their cause.

CENTERFORSECURITYPOLICY: Saudi Friends and Foes