It is unclear who prepared these early medallions, only that each individual box containing a medallion bore the word "Fliteline".句中的only that 应该如何理解?这是一个组合连词吗?希望解答,谢谢。
While that eased previous eligibility rules, which required freelancers to work for 52 weeks before becoming eligible, it would have required all freelancers not yet eligible for benefits to start the waiting period over again on Jan. 1.
麻烦请老师分析句子及翻译!