他听到她咯咯地笑，穿上她的睡袍，踮着脚走到厨房，弄响面包机、咖啡机还有窗帘。
He listens as she giggles, slips on her robe, tiptoes into the kitchen, and rattles the toaster, the coffee maker, and the curtains.
笑是一个严肃的科学课题，是一个研究者们仍然正在试图弄明白的问题。
Laughter is a serious scientific subject, one that researchers are still trying to figure out.
不弄，也很难(咯咯的笑，然后叹了口气)。
不弄，也很难(咯咯的笑，然后叹了口气)。
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