The United States should also develop a plan to offset the economic sanctions that China itself would levy against countries that aided in the defense of Taiwan.
各位前輩好，想請教此句中兩個that的用法，第一個that是修飾先行詞economic sanctions 的關代用法嗎？第二個that是修飾countries的關代嗎？如果要還原成原本的句子和翻譯成中文要怎麼樣比較順暢，非常謝謝！！