They're called pigs-in-blankets!

它们竟然叫做毯包猪肉！

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The virus is commonly called swine flu because it contains some genetic material from pigs.

这种病毒通常被称为猪流感病毒，因为它包含一些来自猪的遗传物质。

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High-profile analysts had put “buy” ratings on the stocks of companies that they privately called “pigs.”

资深分析人士私下里将买卖上市公司信用等级的行为称之为“猪”。

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The virus is commonly called swine flu because it contains some genetic material from pigs.

VOA: special.2009.05.06

Haul bags are affectionately called pigs because when you're pulling one up a pitch it feels like you might as well be dragging a hog up a mountain.

WSJ: Training for the Big Wall | By Michael J. Ybarra

And as you can see the desired, target, interest rates are very different for the peripheral countries (Portugal, Ireland, Greece, Spain, the so called PIGS) than they are for the core countries (Belgium Holland, Germany, France etc).

FORBES: The Inevitable Failure of the Euro

The new strain, called H1N1, emerged from pigs and jumped over to humans sometime in late 2008, and then swept through the human population starting in the spring of 2009.

FORBES: Has the Swine Flu Disappeared?