Prelaunch
a. 发射前的,下水前的
🗣️ 情景例句
without cultural programs in our school.
我们的学校里没有文化活动。
Health does not consist with intemperance.
健康和放纵，彼此不相容。
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.
历史学家迄今认为日历是随农业的问世而出现的，因为当时人们面临着了解四季的实际需要，