鸣钟,成功;大功告成;

The rats had been conditioned to ring a bell when they wanted food.
这些老鼠已经过训练,想吃食物时就会按铃。
来源:《牛津高阶英汉双解词典》How did you come inside the building since you didn't ring the bell?
没按门铃,你是怎么进楼来的?
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