BBC新闻讲解附字幕:只吃土豆的减肥法健康吗

How Healthy is a Potato-only Diet?

只吃土豆的减肥法有多健康？

Can a diet of eating only potatoes for 60 days be good for you?

This is precisely what one American man has done in order to "remind the public about the nutritional value of potatoes."

Chris Voight, a 45-year-old from Washington, has eaten nothing but 20 potatoes every day for the last two months.

As Head of the Washington State Potato Commission, he's trying to debunk perceptions that potatoes are unhealthy and instead are a good source of fibre, potassium and vitamin C.

So, how has the diet affected his health?

He said: "I've been struggling being borderline high cholesterol for four or five years. I absolutely feel great. I've always had lots of good energy on this diet, I've had no strange side effects, I sleep well at night."

Mr Voight also claimed to have lost 1.5 stone (10 kilos) since beginning the diet.

He accepted that a diet of just potatoes was not sustainable in the long term but said his experiment had shown how "truly healthy" the vegetable is.

"I'm not encouraging anyone to go on this crazy diet, nor would my doctor. This diet was just a bold statement to remind people that there is a lot of nutrition in a potato."

So what is Mr Voight planning to eat once freed from his self-imposed diet?

"I think my first meal is going to be a spicy beef taco, a glass of milk, a crunchy apple, and yes… roasted potatoes."

In 2003, American filmmaker Morgan Spurlock embarked on a McDonald's-only diet for a whole month in order to investigate the health effects on the body. While filming Super Size Me he gained 1.7 stone (11 kilos) and also experienced depression and lethargy.

1.precisely adv.精确地;恰好;细心地

例句：That answers precisely to our needs.

那正好适合我们的需要。

（加强同意的语气）对，的确如此，一点也不错

例句：So you think we ought to wait here?—Precisely.

那么你认为我们应该在这儿等吗?——对。

2.debunk vt.揭穿真相, 暴露

例句：Some advertising slogans should be debunked.

某些夸大的广告用语应予揭露。

3.perception n.感知(能力); 觉察(力)；知觉

例句：He was a man of keen perception.

他是一个感觉敏锐的人。

认识, 观念, 看法，见解

例句：What's your perception of the matter?

你对此事有什么看法?

4.borderline a.边界的

5.absolutely ad.完全地,绝对地,正是如此

例句：Lucy is absolutely devoted to her cats.

露西全身心地爱着她的猫。

6.lethargy n.昏睡

例句：After the meal, I could feel lethargy overtaking me.

饭后我昏昏欲睡。

没精打采,懒洋洋

例句：He felt that he had to drag himself out of his lethargy and begin to write.

他觉得自己必须打起精神，开始写作。

1.Chris Voight, a 45-year-old from Washington, has eaten nothing but 20 potatoes every day for the last two months.

nothing but只有, 只不过

例句：I had nothing in the world but a million-pound note.

除了一张百万英镑的钞票, 这世上我是一无所有。

Don't scold her, she's nothing but a child.

不要责骂她, 她只不过是个孩子。

anything but，nothing but，all but，none but

这些短语均由代词加前置词but(除开)构成，但含义各不相同。

anything but(=not at all,by no means,never)表示“决不，根本不”。

nothing but(=only)表示“只不过，除了……以外什么也没有”。

all but(=almost,nearly)表示“几乎，差一点”。

none but(=no one except)表示“只有；除……外谁也不”。

2.He accepted that a diet of just potatoes was not sustainable in the long term but said his experiment had shown how "truly healthy" the vegetable is.

in the long term从长远观点来看

例句：We should cut our expense in the long term.

我们必须长期削减开支。

3.I'm not encouraging anyone to go on this crazy diet, nor would my doctor.

Nor的用法

(1)传统规则要求nor 用于 neither 后面， 在这种表达中，否定放在第二个部分：他既不能也 （不用 or ) 不愿走。 Nor在当两个独立句子中的第二个也被否时被用， 在这种用法中，它也引起第二个句子主语和助动词的转变：

He cannot find anyone now, nor does he expect to find anyone in the future;

现在他找不到任何人，以后也别梦想找到任何人 ；

Jane will never compromise with Bill, nor will Bill compromise with Jane.

简决不会同比尔和解，而比尔也决不会同简和解。

(2)然而当第一个否定词用not 或 never 表达， 且当第二个连结部分是动词短语时，nor 的用法通常可选择：

He will not permit the change, or (or nor ) even consider it.

他决不会容许改变，或者（或者用 nor ） 甚至考虑它。

(3)当一个名词短语以形式no this or that 被 no，or 引入时比 nor 更常用：

He has no experience or interest (less frequently nor interest ) in chemistry.

对于化学他既没经验也没兴趣（很少用 nor interest ) 。

(4)Or在下面这种情况下比 nor 常用， 如一个名词短语、形容词短语或副词短语被not 引导时：

He is not a philosopher or a statesman.

他既不是哲学家也不是政治家。

4.In 2003, American filmmaker Morgan Spurlock embarked on a McDonald's-only diet for a whole month in order to investigate the health effects on the body.

embark on着手, 开始做某事

例句：He is about to embark on a new business venture.

他就要开始新的商业冒险活动。