The convention was winding up. They were heading for the moment of truth.大会行将结束，他们正走向作出重大决定的关键时刻。Both men knew the moment of truth had arrived.两人都知道关键时刻到了。Finally the moment of truth will be upon you.最后的关键时刻将取决于你。Lift-off is always the moment of truth for a new rocket.离地升空始终是考验一枚新火箭的关键时刻。