| 释义 |
billion 选择性必修1000 全国卷频次：4 教材出处：译林版必修B3U3 /ˈbɪljən/ n. billions 1 十亿 高考真题原句提选：There are about a billion companies out there.外面有大约10亿家公司。There were more than 3 billion passenger pigeons (旅鸽).有超过30亿只旅鸽。We are the products of evolution, and not just evolution that occurred billions of years ago.我们是进化的产物，而不仅仅是数十亿年前发生的进化。 |