Newton's laws were fruitful for the future development of science.
牛顿定律对其后的科学发展起了
大作用。
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The student who secures his coveted leisure and retirement by systematically shirking any labor necessary to man obtains but an ignoble and unprofitable leisure, defrauding himself of the experience which alone can make leisure fruitful.
生们若是蓄意逃避人人应承担的劳动而偷闲,那么,
们所得到的只能是既不光彩又无益处的闲暇; 因

失了唯一能
闲暇富有成果的经验。
合集
英语精读(第2版)第二册
人(汇总) 
CNN 10
生英语 2019年12
合集
世界 
CNN 10
生英语 2021年8
合集 As the universe is ever-changing, and most things, if not everything, is more complex than our minds can comprehend, a more fruitful approach to life, would be one that is flexible, tangible, that enables us to flow along.
由于宇宙是不断变化的,大多数事物(如果不是所有事物的话)比我们的大脑所能理解的要复杂得多,一种更有成效的生活方式,应该是灵活的、切实的,
我们能够随心所欲地生活。