参议院

例句：

1. 1.The Senate is the upper house of the U.S. Congress.
   参议院是美国国会的上议院。
2. 2. The Senate has been a major player in shaping U.S. foreign policy.
   参议院一直是塑造美国外交政策的主要力量。
3. 3. He was appointed to the Senate by President Obama.
   奥巴马总统任命他为参议院议员。