The glider uncoupled from the tow plane. 滑翔机与拖行机分开。
Recordings of the plane's engine are played to the birds, and when the chicks hatch they are taught to follow a rolling machine that looks like the microlight. 飞机引擎的录音一遍又一遍向鸟儿播放,而且,雏鸟一出壳就教它们跟随一架很像滑翔机的滚动的机器到处跑。