- (zhun)I(y)g˾
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B(nio)硰 @߀Щ@ϲҲ֪
Unitrans(lin)
Dd 21ӢZ(y)̳ 21oӢĈ
rB(nio)——һNB(nio)
^С“^”
߀һpL(chng)
B(nio)“ģ”
rB(nio)˱R
(sh)@ô
How can this big bird run so fast?
ɶ@N“B(nio)”@ô
Tall height (g)Ӹ
The ostrich is the tallest bird. It is up to 2.7 meters tall. That’s much taller than a human.
rB(nio)ߵB(nio)(li)——2.7˿ɸ߶ˣ
Long legs L(chng)
Long legs give the ostrich a big stride (). The bird can cover 5 meters in just one stride. That is as long as a car!
һpL(chng)rB(nio)IJܴ——һ~5һv܇(ch)L(chng)
Short wings Сij
They help the ostrich keep its balance (ƽ) and turn.
СijԎrB(nio)“”r(sh)Dͱƽ
Special feet _
The ostrich has only two toes on each foot. One toe is big and the other is small. This helps the bird save energy (ʡ) to run.
rB(nio)ÿֻ_ֻɸ_ֺ——һֻһֻС@rB(nio)ʡı
The ostrich can run fast and far. It can keep a speed of more than 48 km per hour for about 5 minutes.
rB(nio)Ժ܇(ch)ܵIJr(sh)48ǧ/Сr(sh)BmɆ(wn)}
Who is the winner? ȱȿ
The ostrich can finish a 42-km marathon (R) in about 40 minutes. This would take the best human runners two hours.
rB(nio)40犵ă(yu)ɿ(j)42ǧR——(li)ʹõ\(dng)TҲҪɂ(g)Сr(sh)Ҳِ