Floatboard
n. 蹼板, 轮翼, 承水板
🗣️ 情景例句
What did you say? I didn't quite get that.
你说什么？我没听清楚。
She is wearing an apron.
她穿着围裙。
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，