1. The police are the preservers of law and order. 警察负责维持治安。
2. The Testing center will preservers some samples for future reference. 检验结束后，我中心将留存部分样品备查。
3. Of course, many conservatives want to get rid of life preservers altogether. 当然，许多保守连想连救生圈一起摆脱掉。
4. Cheerfulness and content are great beautifiers, and are famous preservers of youthful looks. 愉快和满足是强大的美化者，是年轻容颜的著名的维护者。
5. By the fractional method, characterized the linear preservers of the adjoint function on the symmetric matrix module. 应用分式化方法刻画了唯一分解环上对称矩阵模的保持伴随函数的线性变换的形式。
