Free radicals, linked to rapid aging, are highly reactive with other molecules, including vital DNA and proteins, the destruction of which can damage or kill cells.
与迅速衰老相关联的自由基很容易与包括维持生命所必需的DNA和蛋白质发生反应，而破坏这些DNA和蛋白质，就可能会损伤或杀死细胞。
Scientists there examined DADS ability to kill cells in a process involving free radical production.
科学家们检查(DADS)能够在产生自由基的过程中杀灭细胞。
The Cals had captured nearly a million Quarren throughout their struggles, yet did not want to free them, for they feared the Quarren would only fight until the Cals were forced to kill them.
卡尔人在反抗不断的情况下擒获了近一百万名夸润人，因为蒙卡尔人害怕夸润人会一直打下去，直到自己被迫杀死他们。
Prooxidants would generate free radicals and the formation of hydrogen peroxide, which, the scientists hypothesized, might kill tumor cells.
促氧化作用将产生自由基并形成过氧化氢，而科学家假定后者可以杀伤肿瘤细胞。
They at once take up their nephews' cause, free them, and kill their guards.
他们立刻保护他们的两个外甥，释放他们并杀死看守者。
After he woke up, Du told his family never to kill another animal. He began donating money to free doomed animals.
杜醒来后，告诉他的家人再也不要杀生了。他开始买动物放生。
Take the above reasons into account, the next time you think of raising something for fun, plants should be a better choice, unless you have too much free time to kill.
总结以上原因，下次你想养什么东西的时候，植物是个更好的选择，除非你有很多的时间。
Kathy and Evan kill time by shopping in the duty-free stores.
凯西和艾凡逛免税商店消磨时间。
The mechanism of radiotherapy is its ionization action, which can kill the tumor cell directly or indirectly by generation of free radicals, reactive oxygen species to cure the disease.
放疗的主要机制是通过放射线对肿瘤的电离作用，直接或间接诱发自由基、活性氧来杀伤肿瘤细胞。
Meanwhile, Yingming orders Shimin to kill Shixian. However, Shimin sets Shixian free instead.
另一方面，英明命令世民杀害世贤，但世民却选择把世贤放走。
The only reason he gave was he didn't like playing cards and making jokes in the office to kill time, and he liked a free country life.
他不想留在城里，只是因为他不喜欢每天在办公室里打牌闲扯消磨时间，而更喜欢自由自在的田园生活。
Another semester is coming to a close, and you might be looking for a few ways to kill some free time.
又一个学期要结束了，你是不是还在发愁如何度过接下来的自由时光？
Another semester is coming to a close, and you might be looking for a few ways to kill some free time.
又一个学期要结束了，你是不是还在发愁如何度过接下来的自由时光？
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