... 垃圾桶 ash can 垃圾箱 refuse box 拉格朗日多项式拟合 Lagrangian polynomial fit ...
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There is also a 6, 7-year-old boy carrying a box of books and postcards, eagerly convincing us to buy and bargained with us in English, whose innocent smile made you feel a shame to refuse.
还有一个6 7岁的小男孩，端着一盒书和明信片，起劲地向我们推销，还会用英语跟我们砍价，天真的笑容让人无法拒绝。
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