keep upend遵守承诺
upend forging[机] 冲挤锻造
to upend倒放
upend deformation顶张变形
to turn upside downto upend倒放
"the airplanes upended"
"upend the box and empty the contents"
V-T（及物动词） If you upend something, you turn it upside down. 颠倒
He upended the beer, and swallowed.
他把啤酒倒出来，大口喝了。