The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.

做出伟大工作的唯一方法是热爱你所做的事情。

在适宜的环境里，幼儿在工作中发展了一种技能和精确性，那是使我们十分欣慰的。

Technological innovation requires long-term accumulation and cannot be rushed for quick success, this is especially true for agricultural research.

What I claim is to live to the full the contradiction of my time, which may well make sarcasm the condition of truth.

译文：贫困时的朋友不能遗忘，共患难的妻子不能抛弃。体现对情义与责任的坚守。