It is better to take small steps every day-like writing one paragraph of your book or crafting a handful of code-rather than waiting for a huge block of time to open up because this will never happen.
So, what you do is you set up a couple of displays, one where the block is stopped, the other one where you take this away with a trap door and it keeps going.
所以，你可以设计几个演示，一个是木块被挡住了，另一个是用活门把木块挪开，使得屏板继续上升。
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A lot of designers sometimes get to point when they get a designers block, which is when a designer struggles to come up with a new ideas for the direction they want to take their design.