短语讲解：

1. Political experts have said the change could lead to the undoing of many of President Barack Obama’s policies.

lead to 导致; 把…带到; 领到
例句：Smoking can lead to lung cancer.
抽烟可能导致肺癌。

2. He also won other states that he was already expected to win.

be expected to 被期待做某事; 有望做某事; 期许
例句：I shall be expected to shell out the money for the party.
我将要支付这个集会的费用。
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