Invented in 1951, the rotaryengine is a revolutionary concept in internal combustion.
1951年发明的旋转引擎是内燃领域的一个革命性观念。
《柯林斯英汉双解大词典》
2
A rotaryengine attached to the steam engine enabled shafts to be turned and machines to be driven, resulting in mills using steam power to spin and weave cotton.