Research data indicate that there is a great deal of poverty in the United States among single-parent families headed by women.

研究数据表明，在美国，由妇女当家的单亲家庭中存在着大量的贫困现象。

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The aid agency CARE has also said that up to one-fifth of displaced families around Goma are headed by single mothers.

国际关怀组织也说，在戈马周围的逃难家庭中，有五分之一是靠单身母亲支撑的。

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If you're headed west, take a single melatonin capsule just before bed at your destination.

如果你往西飞，只要在目的地睡觉之前吃一颗褪黑色素就够了。

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The insurgency is not a single-headed beast, but rather a loose affiliation of many different groups that rarely act in a coordinated way.

NPR: Zarqawi Hideout Yields 'Trove' of Materials

CouchDB and MongoDB are essentially single-headed databases, and from that standpoint, availability is a function of how long you can keep the hardware running.

FORBES: What You Need to Know About NoSQL Databases

Children living in single female-headed families were more than four times as likely to be living in poverty, and six times as likely to be living in deep poverty, than children living in married couple families.

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