如何使用 "occurrence" 造句

1. The interspersing layers of ash show they were a regular occurrence .
夹杂着的灰层显示死亡是定期发生的。
2. If this is a first or second time occurrence , let it go .
如果这是第一次或者第二次发生,不要理会。
3. The mutation is a natural occurrence , as is the reaction to the drug .
这种突变是自然发生的,就像身体对于药物的反应一样。
4. Munsch says that each relationship is still unique , and infidelity remains a relatively uncommon occurrence .
munsch说每一种感情关系都是不同的,出轨仍然保持着一个相对不寻常的发生率。
5. Writing in science , they said fire occurrence rates had increased in 59 % of areas with reduced deforestation .
他们在《科学》杂志上撰文指出,在森林砍伐减少的地区,火灾发生率增加了59%。