Do you want to do something this Sunday? John and I would like you to come over for a party.
你星期日要不要做什么事?约翰和我想请你过来参加宴会。
Sometimes the secrecy goes to such an extent that the whole nature of the research cannot be mentioned.
有时,保密竟达到了这样的程度,即连研究工作的整个性质都不准提及。