名词
中文翻译：支点
同义词：
['pivot', 'axis例句：1. The support trunnion of the elevator is located at the top of the building.（电梯的支点位于大楼顶部。）']
例句：
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1. The support trunnion of the elevator is located at the top of the building.
电梯的支点位于大楼顶部。
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2.The engineer used a support trunnion to adjust the machine's position.
工程师使用一个支点来调整机器的位置。
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3.The construction crew had to shift their work around the support trunnion.
施工队不得不围绕支点调整他们的工作。