一日,我正在给学生讲课,窗外突然传来一阵急促的鸟鸣。我循声望去,原来是一群白头翁在草坪上争食。仔细一看,那两只健壮、成熟的鸟,可能是一双父母;那五只羽毛未丰、小一点的鸟,显然是一群刚出窝的子女。这美满幸福的一家子为什么出现“争食”的场景呢?再细一看, 我终于看出了名堂:父母先觅得一堆好吃的东西,子女们按习惯,张口就来;父母很不高兴,就一起驱逐;子 One day, I was giving a lecture to the students. Suddenly, a burst of birdsong came out of the window. I followed the reputation, turned out to be a group of Pulsatilla fight on the lawn. Looking closely, the two robust and mature birds may be a pair of parents. The five fledgling and smaller birds are apparently a group of newlywed children. This happy family why the emergence of “fight food” scene? A closer look, I finally see the name: parents find a pile of delicious things, their children according to the habit, mouth open; parents are Unhappy, they deport together; son