1. As a replacement for lost rose sales, the Johnsons and other growers also are starting to sell other types of flowers.
    作为对失去的玫瑰销售份额的弥补，约翰逊家族和其他种植商也在开始销售其他花卉。

2. It would be a breach of duty for the guard to leave before his replacement comes.
    守卫在替补者尚未来之前离开岗位，是不忠于职守的。