On horseback it is possible to get quite close to elephants, giraffes and many other animals.

骑在马背上，你可以亲密接触大象、长颈鹿和许多其他动物。

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In remote mountain areas, voters arrived on horseback.

在偏远山区，选民们是骑着马来的。

《柯林斯英汉双解大词典》

What a fine thing it is to ride on horseback!

骑在马上是多么好的一件事啊！

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Finally,it was done. The next morning, Lincoln -- on horseback led a slow parade to the new cemetery.

VOA: special.2009.11.12

There are these enormous statues. One of the statues is the President Theodore Roosevelt on a horse, on horseback.

有很多巨大的雕塑。其中一个雕塑是西奥多•罗斯福总统骑在马背上。

美国的博物馆教育 - SpeakingMax英语口语达人

Secretary of State Webster sent his son Fletcher on horseback to tell Tyler of the president's death.

VOA: special.2009.01.29

The article 'Iceland on horseback' was published in partnership with Lonely Planet Traveller.

BBC: Iceland on horseback

Perhaps the loss of an American West that was discovered on horseback, a West without roads.

ECONOMIST: America��s highways

Police traverse the steep hills and sprawling shantytowns on horseback and motorcycles carrying out raids.

CNN: Brazil gang's slaughter of police sparks fightback