慢速英语:Southern States Form a New Nation

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短语讲解：

1. But northern advisors said the president must not give up any federal property or rights.

give up 放弃; 投降
例句：Don't give up hope; keep on trying. 
不要灰心，继续努力。 

2. The attorney general and the secretary of state even threatened to resign if President Buchanan agreed to South Carolina's demands.

agree to 同意， 赞成
例句：They agree to the plan in principle. 
他们原则上同意这个计划。 

3. But at least one rejected the idea completely.

at least 至少
例句：At least that's the theory.
至少理论上是这样。

4. But he was not afraid of it.

be afraid of 害怕，担忧
例句：Nobody need be afraid of catching the disease. 
谁都不用害怕能得这种病.