The dyn: evaluate function converts its argument to a string and dynamically evaluates that string as an XPath expression, returning the result of this evaluation.

evaluate函数将其参数转化成一个字符串，将该字符串作为XPath表达式进行动态计算，并返回结果。

youdao

To evaluate this argument, I think we need to start by reviewing the argument for density.

FORBES: Density Limits Are Urban Protectionism