起程的英文：
start off

参考例句：

To set off late at night
寅夜起程

The youngster set off home,smiling to himself at the prospect of surprising his family with his good news.
小伙子面带笑容起程返家，期待着他的好消息能给家人一个惊喜。

In the dead of winter he and Henri de Tonty started down the Illinois.
他带着亨利·特·吞提在这一年的隆冬起程，顺着伊里诺斯河而下。

And now I began to think of leaving my effects with this woman, and setting out for lisbon, and so to the Brazils
我开始打算把我的财产交给这个妇人，起程到里斯本去，再从那里到巴西去。

start是什么意思：
n. 开始，起点；动身；开动；震惊，震动
v. 出发；开始，着手；发动；创办；惊起

Then It'started to break into pieces. These pieces started to move apart.
然后它开始分为很多块。这些分开的板块开始移动，分开。

He started coughing blood.
他开始咳血了。

His hearing has started to go.
他的听力开始衰退。

He gave a slight start.
他微微地震动了一下。

The engine won't start.
引擎发动不起来。

off是什么意思：
adv. 掉，下；离开；隔开；切断；停止；；休息；光，完，尽；全部地
prep. 从...离开；从...向下；在...的外面；偏离...；从...分岔；不再从事...；低于...
adj. 关着的；停止流通的；延期的；取消的；不工作的；处于...境况的；萧条的
v.（用于祈使句）走开，滚开；站开
n. 关掉

Is the water on or off?
自来水龙头开着还是关着？

The gilt is off.
幻想破灭了。

to nip off; to cut off; to break
掐断

take off clearance = clearance for take off
起飞许可

They panned off the sand and dirt.
他们用淘金盘淘去砂泥。