punch bag

n.

[体]沙袋；

Punchbag
Punch bag
PUNCH BAG
Punch bag with an acceleration sensor arrangement for measuring the impact forces of kicks or punches together with a computer based...
A new mechanism of injury for scaphoid fractures: 'test your strength' punch-bag machines.
Punch bag machine injuries
The punch bag
Golf: Punch-Bag Injury Forces Els to Rest
England Fear over Ashton Knee Surgery; FIRST HE WAS A PUNCH BAG, NOW
'My Punch Bag Keeps Me Fit - and I Can Belt It When I Get an Annoying Email'
Patience was a virtue on a night when even punch-bag Samaras came good
Football: Savage: City Used Me like a Punch-Bag
An interview with Christian Bale's punch bag