英语语法分析

The finding points to longstanding evidence that fiber may reduce circulating female hormone levels, which could explain the reduced risk.

这一发现提出了长期存在的证据，即纤维可能会降低女性的循环激素水平，这可以解释风险降低的原因。

Longstanding poverty has been exacerbated by racial divisions.

由来已久的贫穷因种族分裂而更加恶化了。

《柯林斯英汉双解大词典》

I want to point out here that Guinea and China have longstanding friendship.

在这里我想指出，几内亚和中国的友谊源远流长。