The new topic types are defined as an extension, or delta, relative to an existing topic type, thereby reducing the work necessary to define and maintain the new type.

相对于现有主题类型，以扩展或增加定义新主题类型，因此减少了定义和维护新类型所必需的工作。

youdao

If you work in the type of company that can lose archived logs required for disaster recovery, the presence of incremental and delta images gives you more things to misplace.

如果您所在的公司可能丢失灾难恢复所需的归档日志，那么使用渐进和增量映像将给您提供多一份保障。

youdao

China's Yangtze River Delta and the genuine world-class leisure resort-type experience, a perfect combination, will enable the tourists to enjoy unprecedented in Wuzhen dream vacation.

原汁原味的中国江南水乡与世界一流休闲体验型度假区完美的结合，将使广大游客在乌镇享受前所未有的梦幻假期。

youdao