You'll be glad to hear that Bill is alive and kicking.
比尔现在精神饱满,你听了一定很高兴。
I've made a reservation at the hotel you used last time.
我已预订了你上次住过的旅馆。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.