One drawback is that it takes days to kill the locusts.

该产品有一个缺点，即它需要数日才能杀死蝗虫。

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After 19 days lost at sea, the captain decides to kill the cabin boy, the weakest amongst them, so they can feed on his blood and body to survive.

他们在海上迷失了19天之后，船长决定杀死机舱男孩，他是4个人中最弱小的，这样他们就可以靠他的血液和躯体维持生命。

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23after many days had gone by, the Jews conspired to kill him.

过了好些日子，犹太人商议要杀扫罗。

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He said he decided to break his silence after watching a "CNN Presents" documentary, "Shoot to Kill, " about the days after Katrina hit the Gulf Coast on August 29, 2005.

CNN: STORY HIGHLIGHTS

According to the CDC, it takes less than a minute for E. coli to be inactivated if chlorine levels are adequate, about 16 minutes to control Hepatitis A virus, about 45 minutes to kill off the Giardia parasite and over 10 days for a Crypto parasite.

CNN: Yuck! What's in your pool water

So if I am going through a disease or treatment that may kill me, I want to use my last days wisely.

FORBES: Are You Ready For The End Of Life?