The problem with the old Shield Block was it was never a choice.
老版本的盾牌格挡的问题是：它永远不是一种选择。
In this problem you will model a simple block world under certain rules and constraints.
在这个问题中，你将在确定的规则和约束条件下构建一个简单的积木世界。
The restrictor solved the"ice block"problem by heating the valve's body.
该限流器通过给阀体控温加热，彻底解决了超，临界萃取中的冰堵问题。
The restrictor solved the"ice block"problem by heating the valve's body.
该限流器通过给阀体控温加热，彻底解决了超，临界萃取中的冰堵问题。
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