This dissertation arose from my puzzle about the origin of the secret memorialsystem of Qing dynasty.
关于明代密疏的研究，直接缘起于学术界对清代密折制度的认识。
2
The liquid can be recycled back to the ecosystem by being applied to a memorial garden or forest or simply put into the sewerage system.
得到的液体可以被生态系统回收利用，比如可以将其回收至墓地、森林或是直接排入城市污水系统。
3
"At some point it's just corporate chutzpah," says Peter Bach of the Memorial Sloan-Kettering Cancer Centre in New York. "There's no check in the system."