1·It was the fortieth anniversary of the death of the composer.
那是那个作曲家逝世40周年纪念日。
—— 《柯林斯英汉双解大词典》
2·John and I celebrate our fortieth anniversary next month.
下个月，John和我将庆祝我们的结婚四十周年纪念日。
3·The model represents his love for his wife, Pope explains, and he hopes to give it to her as a fortieth anniversary present in two months.
Pope向他说明，这模型代表了狱长对他妻子的爱，他希望能在两个月后，将它作为他们结婚四十周年的礼物送给她。
4·June amazed us on its fortieth anniversary: if we do not find someone to defeat us again, we defeat ourselves with our own hands so as not to forget!
这样的四十周年纪念让六月也惊叹我们：如果找不到谁再次击败我们的话，我们用自己的手打败自己，以免忘记！
5·They arranged a very interesting event to celebrate their parents' fortieth wedding anniversary.
子女们为父母的宝石婚纪念日策划了一个有趣的活动。