我们大多数人需要看一看和改变一下如何管理我们手机的使用。

The majority of us probably need to take a look and change how we manage our cellphone use.

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它意味着运用希望和改变的力量。

It means using the power of hope for change.

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而不必面对不确定的风险、阵痛和改变。

Without having to face infinite risk, pain, and change.

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If you were to make that change you would find that the molecule now has completely different biological and chemical properties.

如果要做出这样的变化,你会发现,分子的生物形状,和化学性质完全改变了。

麻省理工公开课 - 化学原理课程节选

Any era of great change, great ferment, usually causes reform, anxiety, people who get worried, want to change things.

任何一个大变革的时代,大的动乱,通常会导致改革和焦虑,人们变得担忧,想要改变局面

耶鲁公开课 - 美国内战与重建课程节选

Do we rely on the individual behavior and education, or do we try to do something about the environment?

我们是要依赖个人行为和教育,还是尝试去改变环境呢

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选