1. She invoked several eminent scholars to back up her argument. 她援引了几位赫赫有名的学者来支持她的论点。
2. Other actions can be taken to back up the policy. 可以采取其他行动来支持该政策。
3. Furthermore, one sensory ability may back up another. 此外,一种感知能力可能会为另一种感知能力提供支持。
4. Let's back up again and talk about the time period from the 1860s to the 1880s and talk more about what happened in women's art classes. 让我们再次倒退,回到19世纪60到80年代,来多谈谈女性艺术课上发生了什么。
5. You can back up another two feet or so. 你可以再退两英尺左右。