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; instead, it
这种形式的it一般指代是没有问题的
另外一例
Pioneered by scientists at Los Alamos National Laboratory, BEAM robots are not programmed to walk; instead they use brain like circuits called neural networks to learn to walk through trial and error.
但是D中which的指代问题是大大的，which离他本应指代的radio太远了 |
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