Maybe you can use some trick to select the third item in a list, but how do you select an item that might appear in any position in a variable-length list?

或许，你可以用某种小技巧来选择列表中的第三项吧，但是你如何选择一个出现在可变长度的列表中任何位置的表项呢？

youdao

Maybe you can use some trick to select the third item in a list, but how do you select an item that might appear in any position in a variable-length list?

或许，你可以用某种小技巧来选择列表中的第三项吧，但是你如何选择一个出现在可变长度的列表中任何位置的表项呢？

youdao