例句與造句

1. The work theory of the roto - jet pump is very specific and it has very simple construction and smooth performance curve and cheap maintain
   旋噴泵工作原理比較特殊，結(jié)構(gòu)簡(jiǎn)單，性能曲線穩(wěn)定，維護(hù)方便。
2. It's difficult to find smooth performance in a sentence. 用smooth performance造句挺難的