A very common source of writer’s block is the constant need of a “meaning”, or a “form”, or some sort of constraint, like the size (1000 words by noon, ok?). This can be really pressuring.

作家一个很常见的瓶颈就是非要有个写作的"意义",或者一种"形式",或者其他的一些限制,例如字数(比方说到中午要写够1000字,是吧?)

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Fans and air filters add to the distractions, so some astronauts wear ear plugs to block out the constant hum.

风扇和空气过滤器是另一个干扰源，因此有的宇航员会戴耳塞，挡住这些持续不断的嗡嗡声。

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Because constants are an important building block for constructing expressions, it is important to be able to write constant values for each of the basic data types.

因为常量对于构造表达式非常的重要，所以学会书写每种基本数据类型的常量就显得至关重要了。

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