【语法】求助
,语法分析
Contrary to some research that has found an upper limit to the amount of exercise that is healthy,the researchers found that there was seemingly no limit to the longevity benefits of excise /两个that引导什么从句?contrary 不是名词吗?谢谢友友

Contrary to some research that has found an upper limit to the amount of exercise that is healthy,the researchers found that there was seemingly no limit to the longevity benefits of excise /两个that引导什么从句?contrary 不是名词吗?谢谢友友
