VOA慢速英语:US Congress Gives President Obama a Trade Victory

短语讲解：

1. The expanded powers are designed to protect proposed agreements from congressional changes.

protect from 保护， 保卫
例句：Wild wood should be well protect from excessive hag.
野生森林应该被保护以免过量砍伐。

2. President Obama is expected to sign it into law.

be expected to 被期待做某事; 有望做某事; 期许
例句：Population density can be expected to be related to wastewater treatment costs in several ways.
人口密度从多方面影响到废水处理费用。

3. The sudden increase in support for free trade saddened its opponents, like Independent Senator Bernie Sanders.

in support 后备的， 准备给予支援的
例句：These troops are stationed in support.
这些部队部署在第二线。