如果读取购物车所返回的条目对象实现了分类、交货期和价格方法所要求的接口，则该过程不需要进行任何复制。

If the item objects returned from reading the shopping cart implement the interfaces required by the catalog, lead times, and prices methods, no copying at all is necessary in the process.

youdao

细小病毒的复制紧紧依赖于和增殖及分化有关的细胞因子，尤其是和细胞周期S-期有关的因子。

The replication of parvovirus is strongly dependent on cellular factors associated with proliferation and differentiation, especially those related to the S-phase of the cell cycle.

youdao

That's one of the properties of mitosis, that the DNA gets completely duplicated during the S phase, during DNA synthesis phase.

有丝分裂的一个特征,就是DNA在S期内完全复制,S期就是DNA合成期

耶鲁公开课 - 生物医学工程探索课程节选