laugh heartily; 放声大笑
laugh wryly [boisterously; grimly; foolishly]; 苦[狂; 狞; 傻]笑
ridiculous enough to make people laugh their heads off; 叫人笑掉大牙
We laughed at his fancy. 我们笑他异想天开。
牛津高阶第八版
美国韦氏词典
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维基百科 (自由的百科全书)