7. Why do teenage girls giggle so much?

为什么十几岁的女孩那么喜欢傻笑？

8. Father used to chortle over such funny jokes.

父亲以前一听到这样的笑话，总会哈哈大笑。

9. We whisper, and hint, and chuckle, and grin at a brother's shame.

（一旦）看到那个兄弟出了洋相，我们大家或者是窃窃私语，要不就是指指点点；或者暗自发笑：要不就是笑得合不拢嘴。

10. Since the famous portrait, the Mona Lisa was painted people have been fascinated by the mysterious smile on the face and by the strange background of fantastic rocks.

自从著名的《蒙娜丽莎》问世以来，人们就对她脸上神秘的微笑，奇形怪状的岩石所构 成的非同寻常的背景而心驰神往。