你一定要权衡利益与成本二者的得失。
我一定要变成了一个素食主义者？
请一定要权衡能力与简洁，并在可能时二者兼顾。
Make sure you balance power with simplicity, and when possible, allow both.
并且消费者不会使用电子货币，除非他们有东西一定要买。
And shoppers would not use electronic cash unless they had something to buy.
对于决策者来说，一定要先理清步调：首先，要鼓励生育。
For policymakers, the priorities are clear. First, they need to focus on generating growth.
我的儿子不一定要成为作家，但他会成为一个故事讲述者。
My son need not become a writer, but he will become a storyteller.
如果你是一个滑雪者，你一定要考虑加入俱乐部。
If you are a skier, you should definitely consider joining a club.
那些准备买房者一定要注意现在房产界的泡沫了！
Those potential home buyer must mind a few bubbles in estates market.
浩太：法律规定冒犯神灵者一定要处以刑罚。
Hotep: the law clearly states. the punishments for such a crime.
歌手和器乐演奏者一定要让每个音符都完美的协调。
Singers and instrumentalists have to be able to get every note perfectly in tune.
所以，我们在做平面广告设计时一定要处理好点、线、面三者之间的关系，合理的运用到设计作品中。
Therefore, we do print ad design must handle point, line, the relationship between the surface and reasonable use of the design work.
从此我暗暗发誓一定要成为一个素食主义者。
不过工业和现代生活并不一定要成为美的破坏者。
But industry and modern life do not have to be enemies of beauty.
校订者一定要仔细。
这二者一定要区分开，很关键！
We must differentiate between these two aspects; it is crucially important!
要做一个好的钓鱼者，你一定要有耐心。
要做一个好的钓鱼者，你一定要有耐心。
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