several billion

• 几十亿

several billion的用法和样例：

例句

1. The building spends several billions.
   这座大楼花费了几十亿。
2. The human brain contains several billion nerve cells, which are connected with one another by fine nerves.
   人类的大脑含有几十亿个神经细胞，这些细胞由纤细的神经将彼此连接起来。