本文目录
叶黄素的功能和作用是什么
1保护视觉
1.1叶黄素可吸收大量近于紫外光的蓝光（蓝色光是所有能到达视网膜的可见光中能量最高、潜在危害性最大的一种光。）
1.2叶黄素在眼睛中的另一项重要功能是作为抗氧化剂通过抑制氧自由基来抑制有害自由基的形成。
1.3提高血液中叶黄素的含量可显著降低A M D 的患病危险。（A M D是美国和其他发达国家老年人失明和普通人视力下降的主要原因。）
1.4研究发现通过增加叶黄素的摄入量和降低白内障发生率间在统计学上呈显著性的趋势
2可延缓早期动脉硬化的进程
3抗癌作用：最新的研究成果表明, 叶黄素对多种癌症有抑制作用, 如乳腺癌、前列腺癌、直肠癌、结肠癌、皮肤癌等
4 抗氧化作用
叶黄素作为一种抗氧化剂可抑制活性氧自由基的活性, 阻止活性氧自由基对正常的细胞的破坏。叶黄素可通过物理或化学淬灭作用灭火单线态氧, 从而保护机体免受伤害。另外,叶黄素还能增强机体的免疫能力。
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意大利的奥托.梅莱拉（Oto Melara ）公司啊，该公司是从1905年至今都一直在生产军用武器。现在和依维柯、菲亚特公司合并，形成集团公司——“芬梅卡尼卡”。
口语中certainly，definitely和absolutely的区别
Certainly
这个单词用来强调和展现（说话一方）对于某件事感到毫无疑问和确信，类似“当然”。
造句范例：
I certainly never expected to become a writer.
It is certainly true that there are .
This car is certainly not mine.
对话范例：
Rose: John, I read your novel yesterday. You are such a great writer.
John: Thanks. I’m glad you liked it.
Rose: Have you always wanted to become a writer?
John: I certainly used to write a lot when I was younger. But I never expected to become a professional writer.
Rose: I must say you are doing well. You are certainly going to be a successful author someday.
John: Well, there’s certainly a long way to go. Can you help me to improve?
Rose: Certainly.
Definitely
这个单词可以被用来表述自己明确的态度，完全的同意或是强烈的肯定，类似“确实”。
造句范例：
I definitely need a holiday.
I think iPhone6 is definitely bigger than iPhone 5.
The hotel fitness centre is definitely worth a visit.
对话范例：
Rose: John, did you call your mother?
John: Not yet. I’ll definitely call her in the evening. I’m sure she’s fine.
Rose: I’ll most definitely not accept any excuse this time. I want you to call her right now.
John: What’s the hurry? I told you I’ll definitely do it once I’m back from work.
Rose: Your relatives are coming over. They’ll definitely ask you for some news about her. Don’t you think calling her back is a good idea?
John: Definitely.
Absolutely
这个词用来表述绝无例外的意思，或强烈地表示绝对赞同的意思，类似“绝对”。
造句范例：
He made his reasons for resigning absolutely clear.
Are you absolutely sure?
This cake is absolutely delicious.
对话范例：
Rose: I absolutely want to do this, John.
John: Do you have any idea of what you are saying? Why do you want to resign?
Rose: I think I’ve made my reasons for resigning absolutely clear.
John: I understand your reasons, Rose. But we had been considering you for a promotion.
Rose: I absolutely understand that it will be a great loss for me to leave at this point. I just can’t stay any longer.
John: It’s your final word then.
Rose: Absolutely!
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