First, it increases the production of free radicals, highly reactive molecules that tear about sensitive cell components like DNA, causing premature cell death (apoptosis).
首先，造成自由基生成的增加，激活一些分子造成细胞中敏感物质如dna等的损伤，因而造成了细胞过早的凋亡。
A real fighter never complains or whimpers when another dog is about to tear it to ribbons.
当另一只狗要把它撕成碎片时，真正的战士从不抱怨和呜咽。
DBUnit is about maintaining database integrity across test runs (and in fact you can use DBUnit as part of the set up and tear down of your tests in Twist).
DBUnit是关于跨测试执行(testruns)去维护数据库完整性(事实上，在Twist测试中，你可以使用DBUnit作为测试初始化和运行结束的一部分)。
He spoke about the conflict over whether to protect the old walls or tear them down to represent the conflict of ideas.
他通过谈论保护与拆毁古城墙之间的矛盾，显示了这两种观念之间的冲突。
Over the years, on too many occasions to count, I saw my father tear stories out of the newspaper, about people he had never met who were facing some injustice or hardship.
多年来，在太多次场合，我看到父亲撕掉报纸上关于一些他从未谋面人的故事，他们正面遭受不公或面临困境。
Over the years, on too many occasions to count, I saw my father tear stories out of the newspaper about people whom he had never met, who were facing some injustice or hardship.
多年来，在太多次场合，我看到父亲撕掉报纸上关于一些他从未谋面人的故事，他们正面遭受不公或面临困境。
“I remember once he was particularly quiet, ” said Mr. Obama’s senior adviser, David Axelrod, “and I asked him what he was thinking about, and he said, ‘These letters just tear you up.’
奥巴马先生的高级顾问大卫·阿克塞尔罗德说，“我记得有一次他特别静默，”顾问说，“我问他在想什么，他说，‘这些来信读了就让人心碎。’
Bill: So, how about it? Can you tear yourself away from the TV tonight?
比尔：那么，这主意如何？你能今晚远离电视机吗？
Over the years, on too many occasions to count, I saw my father tear stories out of the newspaper about people whom he had never met, who were facing some injustice or hardship.
多年来，在多到数不清的场合里，我看到我父亲从报纸上撕下关于那些他从未见过的正在面临不公和苦难的人的报道。
He had been puzzling all day for the answer to the last clue in the crossword and was about to tear his hair out when his wife told him the correct answer.
他整整一天都在为能解答纵横填字的最后一个迷而苦思，就在他几乎已是集躁不安的时候，他妻子告诉他正确的答案。
Do not have to worry about, let us tear down this page of the calendar, the dead do not go to retain it.
不必惆怅，让我们一起撕下这一页日历，该逝去的不要再去挽留它。
Thoughts of jealousy, fear, worry, and anxiety tear down and destroy your nerves and glands, bringing about mental and physical diseases of all kinds.
嫉妒、恐惧、担心和忧虑的想法会损毁你的神经和器官，招致各种各样的心理和身体病症。
If you're worried about scratches and wear and tear, platinum may be the better choice.
如果你担心抓，戴和撕，铂金可能会是更好的选择。
We have to set up our shop to make these things and that takes about a day to set up and another half day to tear down when we finish.
这些产品在工厂生产时，光装置就要花一天，在生产完毕后，又要花半天时间拆除。
The ferocious winds seemed about to tear the ship to pieces.
狂风仿佛要把船撕成碎片似的。
So, how about it? Can you tear yourself away from the TV tonight?
怎么样？你舍得不看今晚的电视吗？
So maybe this is not an insanely romantic gesture, but it felt insanely romantic to me, and literally brought a tear to my typically skeptical-about-love eye.
也许这不是一个非常浪漫的举动，但对我来说这已非常浪漫，不禁让我这样一个对爱充满怀疑的人热泪盈眶。
Additional research is therefore needed before we can draw robust conclusions about the effectiveness of individual OTC artificial tear formulations.
因此，在对非处方人工泪液组成的效用提出更有力的结论前，我们需要有更多的研究。
Since you know so much about it, take off your petticoat and tear it up and tie her to the back of the wagon.
那就把你的衬裙脱了，你既然这么在行，撕成布条，把它拴在马车后面。
He was just about to tear her in pieces when she begged him to spare her life: "I'm not big enough, " she pleaded, "to make you a good meal, you ought to seek your prey among the bigger birds.
就在老鹰将要撕碎夜莺时，她恳求老鹰饶命：“我的个头太小了，不能让你饱餐一顿，你应当去抓那些个头更大的鸟。”
Don began to tear up when he talked about his son.
唐谈论起他的儿子就开始哭。
One of the most frequent questions about Bichons is how to deal with excess tearing and tear stains on the face.
一个经常困扰大家的关于比雄的问题是如何对付它们过多的眼泪及在脸上留下的泪痕。
Don't worry about it. A little wear and tear is to be expected.
别担心，一点点的磨损是免不了的。
为我与你的分离去而哭泣。
I turned to look at Abdel, to begin asking him a series of questions about the best way to proceed from that point on - and I saw a man of maybe 40 years old with a single tear running down his cheek.
我转过去看着阿卜杜勒，开始问他一些问题，该选择哪一条最佳的路线到达我们的目的地。这时我看到这个40岁的男人脸上滑过一行泪水。
I turned to look at Abdel, to begin asking him a series of questions about the best way to proceed from that point on - and I saw a man of maybe 40 years old with a single tear running down his cheek.
我转过去看着阿卜杜勒，开始问他一些问题，该选择哪一条最佳的路线到达我们的目的地。这时我看到这个40岁的男人脸上滑过一行泪水。
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