Therefore, we shall compete against time and do not let it slip by unproductively.
因此，必须与时日竞争，切莫使时日空过。
2
Business people, for instance, should not leave money sitting unproductively in Banks.
商界人士，例如，不应把钱坐在非生产性银行。
3
Nevertheless, society has been richer by the labour while the coat lasted, that is, until society, through one of its unproductive members, chose to consume the produce of the labour unproductively.