例句與造句

1. The significance about this paper was expressed . chapter 2 is the main body of the paper , we estimated and calculated the survival probability of a two - insurance risk model ; we acquired the expectation of maximal aggregate loss and the distribution of the supreme surplus before ruin ; at the same time , we discussed multi - insurance risk model in brief . in chapter 3 we briefly reviewed the whole paper and put forward the further tasks
   第一章緒論部分對(duì)風(fēng)險(xiǎn)理論及其發(fā)展作了回顧，說(shuō)明將經(jīng)典風(fēng)險(xiǎn)模型推廣到多險(xiǎn)種風(fēng)險(xiǎn)模型的意義所在，并介紹了兩種典型的處理方法和獲得的主要結(jié)果；第二章是主體部分，詳細(xì)探討了兩險(xiǎn)種風(fēng)險(xiǎn)模型生存概率的估計(jì)及計(jì)算，并得到了保險(xiǎn)公司最大損失的一階、二階矩和破產(chǎn)前最大余額分布，同時(shí)也簡(jiǎn)略討論了多險(xiǎn)種風(fēng)險(xiǎn)模型；第三章對(duì)全文作了回顧，提出下一步要做的工作。
2. It's difficult to find aggregated loss in a sentence. 用aggregated loss造句挺難的