Kundt
孔特常数
🗣️ 情景例句
I was deeply impressed by his speech.
他的演讲给我留下深刻的印象。
The packing must be strong enough to withstand rough handing.
包装必须很坚固，能承受野蛮装卸。
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，