But it's now summer and the falcons are busy raising their young. During the summer, Icelandic gyrfalcons hatch up to five young.

但现在是夏天，矛隼正忙于养育后代，整个夏季里冰岛矛隼会产下五只幼鸟。

But if you're hatching in very parallel hatching to make the background, and Leonardo more or less invented this method of drawing something on a sheet of paper and then hatching up to the edge of it.

但如果你要画影线，画平行的影线来做背景，那可以说达芬奇发明了一种画法，他在纸上从线条边上开始画影线。