騎手たちがすっかり緑色になっている野原で馬に乗っている
騎手たちがすっかり緑におおわれた野原で馬を競争させている
The Jockeys are riding horses on the field, which is completely green
The Jockeys are racing horses on the field, which is completely green
Jockeys are racing their horses on the green field .
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