關於”that”的疑問(ㄧ段句子)

這是advanced其中一段句子,對於句中3個that的用法,我被混淆了。麻煩文...
Delta and Hartsfield-Jackson are among about a dozen U.S. airlines
and airports that have largely given up traditional tickets counters that
run parallel to queue up in long, snaking lines that allow little room to
spread out.
Update: 謝謝小安安的回答,不過可以在詳細一點或舉個其他例子嗎?
1 answer 1