要真正理解宇宙，我们必须首先理解构成它的最小粒子。
The work of every workman is fully planned out by the management at least one day in advance, and each man receives in most cases complete written instructions, describing in detail the task which he is to accomplish.
"Life is tough, and things don’t always work out well, but we should be brave and take risks. We shouldn’t hesitate to take the next step."
移民可以对创新和生产力产生积极影响。