Although its visual effect is so pronounced, dust is only a minor constituent of the material, extremely low in density, that lies between the stars.

尽管它的视觉效果如此显著，但尘埃只是位于恒星之间的物质的一个次要组成部分，其密度极低。

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Half a century of town and country planning has enabled it to retain an enviable rural coherence, while still permitting low-density urban living.

半世纪以来，合理的城乡规划使英国得以保留令其他国家羡慕的乡村协调性，同时还允许低密度的城镇人口。

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Low energy density means there are few calories in a lot of food.

而低能量密度意味着食物量虽大卡路里含量却很低。

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The housing of the speaker is made from 8mm MDF (Medium-Density fiberboard) manufactured wood which allows for VLD (Very Low Distortion) technology when listening to music at a high volume.

ENGADGET: Croon Audio's Original Bluetooth speakers promise not to creak while they're cranked

"I'm confused, " he says, because reducing low-density lipoprotein (LDL), or bad cholesterol, is such a cornerstone of cardiology.

FORBES: A Backlash Against Vytorin?

But when Zetia was combined with a statin like Lipitor or Zocor, it lowered bad cholesterol, or low-density lipoprotein (LDL), more than anything else out there.

FORBES: Fix It, Fred