crankshaft

"Be careful not to damage any of the fragile items while unpacking them."

"All he had to show for four years of attendance at college was a framed piece of paper."

"I got a letter from my brother."

"You drive nails into wood with a hammer."

"I grind my coffee by hand with a coffee grinder with a crank handle."

"My sister brought several books to the library, and that one is about dinosaurs. "

"He rotated in his chair to face me."

"It looks weaker and weaker, the more I think about it."

"The mechanic fixed the broken bicycle chain. "

"The ancient Romans used a powerful siege engine to break down the city walls. "

"Crassus had wealth and wit, but Pompey had drive and Caesar as much again."

"The archer carefully examined the shaft of the arrow before shooting. "