It used lunar gravity-assist to put it in orbit at the L2 point of the Sun-Earth system, 940,000 miles behind the Earth, with the Sun on the other side.    From Wordnik.com.  [Analog Science Fiction and Fact]

So much gravity, in fact, that they often need to use wheelchairs or other gravity-assist devices.    From Wordnik.com.  [Chicago Reader] Reference

Engineers say the gravity-assist will increase Rosetta's speed by 3. 6km/s with respect to the Sun.    From Wordnik.com.  [BBC News | News Front Page | World Edition] Reference

Engineers say the gravity-assist will have increased Rosetta's speed by almost 4km/s with respect to the Sun.    From Wordnik.com.  [BBC News | Technology | World Edition] Reference

The gravity-assist will increase the spacecraft's speed by 3.6 km/s with respect to the Sun. Instruments in Action.    From Wordnik.com.  [SpaceRef Top Stories] Reference

3.7 thousand million kilometres and swung by the Earth twice and Mars once for gravity-assist manoeuvres.    From Wordnik.com.  [YubaNet.com] Reference

A clever gravity-assist maneuver that.    From Wordnik.com.  [WN.com - Articles related to Twitter launches Japanese mobile site] Reference