stimulus
/ˈstɪmjələs/
any stimulating information or event; acts to arouse action
中文释义：刺激物；促进因素
The bright light served as a stimulus for the plant's growth.
明亮的光线作为刺激物促进了植物的生长。
Financial stimulus packages were introduced to revive the economy.
推出了财政刺激计划以重振经济。