短语讲解：

1. U.S. investigators said they had not been able to reach Mr. Palmer, a dentist in Eden Prairie, Minnesota.

be able to 能够
例句：I admire the way she is able to shrug off unfair criticism.
我很佩服她能对错误的批评意见不予理会。

2. An administration official said the petition had more than 100,000 signatures.

more than 多于
例句：True friendship is worth more than money.
真正的友谊比金钱更有价值。
 4/5   首页 上一页 2 3 4 5 下一页 尾页