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(zhun)I(y)g˾

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)ܵIJr(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)42ǧ׵R——(li)ʹõ\(dng)TҲҪɂ(g)Сr(sh)Ҳِ

Unitrans“(lin)g˾߅,x,NĵČ(zhun)I(y)(w),(zhun)I(y)ȫZ(y)ԷgcϢQ,(zhun)I(y)gCƷo(w)Փڱ,߀Ǻ,҂Č(zhun)I(y)ǼwN(w)˜I(y)(zhun)I(y)g˾,,Ϻg˾,Ӣķg,ķg,nZ(y)g,g˾а,g˾Mr(ji),g˾M˜,g˾,g˾Ϻ
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