canada geese are large 加拿大鹅是大 ; 加拿大鹅鸭是大
The V shape allows Canada geese to save energy.
V 字形可以让加拿大鹅节省能量。
Because of Canada's cold winter, Canada geese have to fly to the warm south in autumn.
因为加拿大的冬天很冷,加拿大鹅不得不在秋天飞到温暖的南方去。
In autumn, Canada geese have to fly to the warm south to get away from Canada's cold winter.
秋天,加拿大鹅要飞到温暖的南方去躲避加拿大寒冷的冬天。
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