hit upon an idea ; A scheme comes to one's mind. ; A good idea occurs to someone. ; think to try a ruse
当那个商人听到这个令人吃惊的故事时，他就心生一计。
When the merchant heard the astonishing story, he thought of a plan.
youdao
这时，我心生一计，拿出了大卡纸，上面写着：特色食物，欢迎品尝。
At this time, my heart had an idea, take out a big cardboard, top write: characteristics food, welcome to taste.
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