First identified in 1969, komatiites are Earth's oldest known volcanic rocks and contain three times as much magnesium as do most volcanic rocks.

科马提岩于1969年首次被发现，它是地球上已知的最古老的火山岩，含镁量是大多数火山岩的三倍。

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It grows three times as much as China.

它的增长量是中国的三倍。

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I like this jacket better than that one, but it costs almost three times as much.

相比那件，我更喜欢这件夹克衫，但它的价格几乎是那件的三倍。

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Its Titan rocket could lift three times as much weight into space as the Atlas rocket used for the Mercury flights.

VOA: special.2009.06.24

Earlier this week, two American senators proposed legislation for three times as much non-military aid as Pakistan now receives.

VOA: special.2009.05.09

The EV-1's battery weighed three times as much as the Volt's does today.

VOA: standard.2010.07.30

They have funneled three times as much as the federal government into embryonic stem-cell research.

FORBES: Anti-Ban Billionaires

Mah says it was three times as much as Graham figured it would be.

FORBES: Magazine Article

Within a few short years he had produced wheat that yielded three times as much as before.

ECONOMIST: The story of man's staple food