名词
中文翻译：触发器
同义词：
['trigger point', 'ignition source']
例句：
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1.The device has a trigger mechanism that can be activated by pressing a button.
这个设备有一个可以按下按钮来激活的触发机制。
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2.The fire was triggered by a spark from the nearby campfire.
火灾是由附近的篝火引起的火花触发的。
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3. The scientist used a trigger to release a gas from a sealed container.
科学家用一个触发器从密封的容器中释放气体。