gold standard-黄金标准
具体用法看例句：
Non-human primates are a<b>gold-standard</b>animal model to precede clinical trials because of their physiological similarities to humans, but their fetuses are even smaller than those of humans, and the ethics of conducting such experiments are complex.
非人灵长动物因其生理结构与人类相似，因此成为临床试验之前的黄金标准动物模型，但它们的胎儿甚至比人类的胎儿还要小。而且进行这样的实验的伦理问题也很复杂。
摘自《自然》20230914期-Human trials of artificialwombscouldstart soon.Here’s what you need toknow