Credit ratings range from a high AAA to a low d.

信用评级的范围从最高的AAA级到最低的D级。

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D. A. pressured companies to reduce salt in those products, the industry said that doing so would ruin the taste of the foods already low in sugar and fat.

当食品和药物管理局强制公司减少那些产品中的盐时，该行业说这么做会破坏已经是低脂低糖的食品的味道。

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In 2007, the O. e. C. D. reports, about 17 percent of the French were over 65, a relatively low figure for Western Europe.

经合组织2007年的报告指出，在法国大约17%年龄超过65岁的人，相比其他西欧国家较低。

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They play indoors. Everything's indoors. And so we're actually starting to see low levels of vitamin D in areas where the sun is plentiful."

VOA: special.2011.01.05

So, if you'd like to switch into one of these three, they have very low numbers right now.

如果你们想要更改去上这三个课程，还有些名额。

麻省理工公开课 - 固态化学导论课程节选

One would be a low fat diet; one would be a low carb diet like Atkins; another would be just a low calorie diet; and then choice D is they all stink.

有的主张低脂饮食,有的主张低碳水化合物饮食,如阿特金斯饮食法,还有的主张低卡路里饮食,选项D则是都不可取

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

No research to date has shown a definitive link between vitamin D and the development or progression of MS because it is possible people with MS simply have low vitamin D levels.

WSJ: Swedish Study Links Multiple Sclerosis to Vitamin D Levels

Part of the difficulty in studying the effects of low vitamin D levels is in simply defining them.

FORBES: Vitamin D: Still More Questions Than Answers

Low vitamin D levels are quite common, and it is nearly impossible to attain adequate levels with diet alone.

FORBES: Vitamin D: Still More Questions Than Answers