Expect one about a min/max problem, something about Lagrange multipliers, something about the chain rule and something about constrained partial derivatives.
有一个极值问题，也有关于拉格朗日乘数法的，链式法则也会有的,约束条件下偏导数当然不会漏掉。
A two-minute conversation about something on television or something in a magazine or something that you're reading yourself can also have some of the same positive effects as reading aloud.
花上两分钟时间跟孩子谈论电视、杂志或你自己正在阅读的书籍上出现的某个话题，也能产生与大声朗读同样积极的效果。
You cannot love or hate something about another person unless it reflects something you love or hate something about yourself. When tempted to criticize others, ask yourself why you feel so strongly.
你不可能去爱或恨另一个人身上的某些东西，除非它折射了你自己身上的某些东西，因此当你想要指责别人的时候，还是先问问自己为什么会反应如此强烈。
Every time you praise something, every time you appreciate something, every time you feel good about something, you are telling the Universe, "More of this, please."
每当你赞美某物，每当你欣赏某物，每当你对某物感觉良好，你就在告诉宇宙：“这个，请多来点儿。”
Every time you praise something, every time you appreciate something, every time you feel good about something, you are telling the Universe, "More of this, please."
每当你赞美某物，每当你欣赏某物，每当你对某物感觉良好，你就在告诉宇宙：“这个，请多来点儿。”
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