trigger /ˈtriɡə/ I. n. ［c］ 1. (枪等的)扳机：Press the trigger with your finger. 用手指扣扳机。 2.引起反应的行动，起因：act as a trigger for… 对…起了导火线作用 ‖II. vt. 触发，引起(off)：His action has triggered off a crisis. 他的行动引起了一次危机。These nutrients trigger our immune systems to produce proteins that reduce the risk of some kinds of cancer, heart disease and some other diseases that come with age.这些营养素刺激我们免疫系统产生的蛋白质能够减少某些癌症、心脏病和另外一些随着年龄可能发生的疾病的风险。