He rode off at a gallop.

他骑马疾驰而去。

She set off at a gallop, leaving me to toil in the rear.

她骑马疾驰而去，丢下我在后面辛辛苦苦地赶着。

We'll see, 'was her reply, and she set off at a gallop, leaving me to toil in the rear.

“我们走着瞧吧，”这是她的回答，她就骑马疾驰而去，丢下我在后面辛辛苦苦地赶着。

Then he woke as if from a dream, wheeled his mount about, and raced off through the tall grass at a gallop.

他仿佛从梦中惊醒，挥鞭催马，以最快的速度飞驰过高高的草丛。

The horse went off at a gallop across the field.

那匹马疾驰起来跑过田野。