如何使用 "occur" 造句

1. Might such an internal adjustment even occur naturally ?
这样的内部调整会自然而然地发生吗?
2. That is because that pain will occur anyway .
这是因为痛苦无论如何都会出现。
3. The isotope does occur in nature but only extremely rarely .
钋的同位素在自然界中的确存在,但是相当罕见。
4. That will only occur if the us now gives the leadership we need .
只有美国现在承担起我们所需要的领导责任,这一切才可能实现。
5. These events are unlikely to occur simultaneously .
这两种情况不太可能同时发生。