例句與造句

1. This paper is organized in the following way . in sections 1 and 2 we will give some basic definitions such as quasi - lattice ordered groups , directed and hereditary sets and so on
   前兩節(jié)分別給出了幾個重要的基本概念(擬格序群和可傳定向集等)以及與它們各自相關的命題。
2. It's difficult to find lattice ordered group in a sentence. 用lattice ordered group造句挺難的