Tectrix
n. [鸟]覆羽(指蔽覆羽翮基部的羽毛)
🗣️ 情景例句
Good morning, Sam.
早安， Sam。
Truth will conquer.
真理必胜。
From the shore line, out to a distance which may be anywhere from a few miles to a few hundred miles,
从海岸线向大海延伸几英里到几百英里的区域是大陆架慢坡，