如何使用 "second" 造句

1. A second factor is inflation .
第二个因素是通胀。
2. The second reason is food .
第二个原因是食物。
3. The second problem is debt .
第二个问题就是债务。
4. Clinton is the second former us president to visit north korea .
克林顿是第二位访问朝鲜的美国前总统。
5. All this takes less than a tenth of a second .
而整个过程只需要不到十分之一秒。