Google and Apple have made it far too difficult to adjust these settings so it's up to us to take steps to ensure we set these triggers to suit our own needs, not the needs of the app makers.
2017年12月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-COUNT
(枪的)扳机
The trigger of a gun is a small lever which you pull to fire it.
If something acts as a trigger for another thing such as an illness, event, or situation, the first thing causes the second thing to begin to happen or exist.