One easy way to improve these triggers is to lighten the trigger Spring (Part 13).

最简单的方法就是换轻一点的板机弹簧(13号零件)。

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And that's how a thunderstorm off the coast of India might trigger a pattern of events which led to the weather switch last spring.

BBC: Met Office three-month forecast was 'not helpful'

John's fourth-grade class in a suburb of Chicago recently invited Ms. Rudnicki to consult with the planning committee for a spring fair to help select refreshments that won't trigger John's allergies.

WSJ: Finding Food Allergy Allies