At the posterior end of the oesophagus is the crop . 食道的后端是嗉囊。
2.
Feed passes through the esophagus and into a temporary storage organ, the crop . 食料经食道进入一个暂时的贮存器官，即嗉囊。
3.
First it passes through the esophagus and into a temporary storage organ, the crop . 首先，它经食道进入一个暂时的贮存器官，即嗉囊。
4.
You always find bits of gravel in a dead bird ' s crop 在死鸟的嗉囊里你总是会发现一些碎石。
5.
Witness the flirty , funny courtship dance of the waved albatross6 and watch as male frigate birds inflate their enormous bright red pouches to attract mates 弄潮信天翁跳着滑稽轻浮的求爱舞蹈，雄军舰鸟则鼓胀起自己那巨大的鲜红色嗉囊去吸引配偶。
