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

VOA: special.2009.01.29

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

A group of sixteenth century warriors on horseback welcomes you in the Equestrian Court.

VOA: special.2010.08.04

They traveled on foot, by horseback and by boat to reach the gold fields.

VOA: special.2010.04.25

Each morning and evening, Lincoln rode between the two houses on horseback,unguarded.

VOA: special.2010.05.10

Cowgirls in colorful outfits race on horseback around barrels placed throughout the arena.

VOA: standard.2010.01.25