一旦鸡蛋孵化后，蛋壳就没用了。Once the eggs have hatched the shells are left behind.蛋壳有许多重要的功能。The shell surrounding the egg has many important functions.母鸡下了3枚蛋壳上有小斑点的漂亮鸡蛋.The hen layed three beautiful speckled eggs....
Noticed the bee's momentary orienting pause before heading back to the hive.注意到蜜蜂在返回蜂房前为确定方向而短暂停留.This inclination suggests how deeply rooted the orienting response is.这种倾向显示了人类的导向反应是多麽根深柢固.Introduced the slide show...
She is compelling, spectral, fascinating, an unforgettably unique performer.她极具吸引力，清幽如鬼魅，令人着迷，令人难忘，是个独具特色的演员。The origins of stars of differing spectral types must be dissimilar.不同光谱型星的起源必然是不一样的.The spectral sensitivity o...