上马的英文：
get into the saddle
mounting
win up

参考例句：

To furnish with trappings.
马饰给…装上马饰

He gave a leap and landed himself on the saddle of the horse
他纵身上马。

Please boost me up onto the horse.
请托我上马。

Give me a boost onto the horse.
帮我骑上马

He mounted his horse and rode away.
他骑上马走了。

To try to stop the deoparture of a populr official by stopping his carriage from leaving
攀辕上马

Can you horse me?
你能帮哦骑上马吗？

Dave mounted his horse and rode away.
戴夫骑上马跑开了。

Before you can learn to ride a horse, you have to be able get on it.
你要学会骑马，必须先会上马。

Easy now, if you get on the horse too fast, you will scare it.
小心点儿，如果你上马太快，它会被吓着。

get是什么意思：
v. 得到；抓住；获得；受到（惩罚）；说服；到达，来；变得，变成；设法；开始
n. 幼兽；生殖

Get to the bottom of
弄个水落石出

Saving is getting
节约等于收入

It was getting dark.
天色渐暗。

into是什么意思：
prep. 进入…中；进入…状态；持续到；输入
saddle是什么意思：
n.
1.马鞍
2.（自行车或摩托车的）车座
v.[T]给（马）备鞍

Put the saddle on the right horse.
要把马鞍放在该放的马上。

He horsed a saddle.
他把鞍放在马背上。

She saddled up a horse.
她给一匹马套上了马鞍。