preservers的例句大全

1、

The police are the preservers of law and order.

警察负责维持治安。
来源：《牛津高阶英汉双解词典》
2、

Cheerfulness And contentment are great And famous preservers of youthful looks.

快乐和满足是最高档的美容产品最名牌的抗衰老制剂.
来源：互联网摘选
3、

Additive Adjugate Preservers on The Triangular Matrices

三角矩阵空间上保伴随矩阵的加法算子
来源：互联网摘选