Research eco-ethics under the context of practical philosophy 并列题名：Research eco-ethics under the context of practical philosophy Research on the ethical dimension of Marx's practical philosophy 并列题名：Research on the ethical dimension of Marx's practical philosophy Kant's essential doctrines of practical philosophy research on Hannah Arendt's communicative political philosophy Research on Taoist political philosophy Study on urbanology in the context of Marx philosophy reinterpreting the groundwork of Kant's practical philosophy 并列题名：Kant's essential doctrines of practical philosophy