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which的話,是把後面的名詞拉到前面去,that是補充說明
所以如果選which你會發現後面那堆「we expand our business all over Asia」沒有地方塞「the plan」了
舉例給你看which的例子:
The plan which we talked about yesterday sounds risky.
後面的是「we talked about yesterday」你可以塞「the plan」,變成「we talked about the plan yesterday.」+「the plan sounds risky.」
謝謝!