Regardless of the syntax you choose, you trace the structure from the concrete schema patterns to the abstract pattern (as in Listing 3), where you find semantic anchors that solidify the definition.
无论选择什么语法，都可以把这种结构从具体的模式范式回溯到抽象范式（参见 清单 3），从而找到确定其定义的语义锚。
Comparing with lower grade concrete in early years, a lot of characters have been changed for modern concrete, such as the changes of concrete composition, to solidify early and high intensity, etc.
与以往混凝土标号普遍较低的情况相比，现代混凝土的组分发生了变化，并往往具有早强、高强的特点。
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