第五十条 办理退（免）税的出口业务发生销售折让、中止或者退回等情形的，纳税人应当缴回已退（免）税款。
虽然有不甘，但不得不承认：在 AI 的浪潮之下，编程匠人的时代正悄然走向尾声。
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But more than that, they taught me how much more fun it was to learn by playing with an interactive, dynamic program instead of passively reading about concepts in a book. […]
Mahjong, Sudoku, free crossword, and more: Play games on Mashable
for t := range c {