1. It has been frequently assumed, but not proved, that the majority of the migrants in what has come to be called the Great Migration came from rural areas and were motivated by two concurrent factors. 人们常常假设，但没有证据证明，在所谓的“大迁移”中，大多数移民来自农村地区，这是由两个同时发生的因素推动的。
2. Galerie St. Etienne is holding three concurrent exhibitions. 圣·艾蒂安美术馆在同时举办3场展览。
3. He will actually be serving three concurrent five-year sentences. 实际上他要同期服3个5年的刑期。
4. He was imprisoned for two concurrent terms of 30 months and 18 months. 他被判处30个月和18个月的监禁，合并执行。
5. Women, who in the study tended to be older than men when they suffered heart attack, were also more likely to have concurrent complications such as diabetes or hypertension． 在这项研究中，女性心脏病发作的年龄往往比男性大，同时也更容易出现糖尿病或高血压等并发症。
