实际上，杜甫是在天宝九载冬预献《三大礼赋》的，这可从杜赋文本和当时历史文献资料得到证明。
In fact , Du Fu offered Fu to " three big ceremonies " in the winter of the ninth in tianbao , and this would be supported by lots of proofs in Du fu 's text and history documents .
三大礼赋