1. The designers are often insensitive to the operational complexities of their machines. 设计者往往对机器的操作复杂性不敏感。
2. In all the languages existing in the world today, there are complexities that must have been developed for years. 在当今世界上存在的所有语言中，肯定有已经发展多年的复杂性。
3. Even when presented with examples of genuine contrition, children still need help to become aware of the complexities of saying sorry. 即使孩子们看到了真诚悔过的例子，他们仍然需要别人来帮助他们理解道歉的复杂性。
4. But even when presented with examples of genuine contrition, children still need help to become a ware of the complexities of saying sorry. 但是，即使孩子们看到了真诚悔过的案例，他们仍然需要帮助来理解道歉的复杂性。
5. Yet the complexities that confront those who would study such materials are not wholly different from those recently surmounted by historians of criminal law in England during the same period. 然而，研究这类材料的人所面临的复杂性，与英国刑法史学家最近在同一时期所克服的复杂性并没有完全不同。
