1.depart v. 离开
较正式用词，尤指动身去旅行。通常有严格的时间性或地点性。
Buses depart from Central Station every five to six minutes from about 9 a.m.
巴士从中央车站发车，每五至六分钟一趟，从早晨9点发车，
Flights for Rome depart from Terminal 3.
飞往罗马的班机从3号航站楼出发。
The plane is about to depart from the airport.
飞机即将从机场出发。
Our tour departs from Heathrow Airport on 31 March and returns 16 April.
我们这次旅行于 3月 31 号从希思罗机场出发，4 月 16 号返回。
The flight will depart Heathrow Airport at 10 o'clock.
这趟航班将于上午10点在希思罗机场起飞。
We do depart for Wales on the morrow.
我们明天确实要前往威尔士。
She departed for London on Friday.
她星期五出发去伦敦了。
The coach departs Potsdam in the morning.
长途客车早上从波茨坦开出。
The President departed from Washington today.
总统今天从华盛顿出发。
In the morning Mr McDonald departed for Sydney
麦克唐纳先生上午启程前往悉尼。
The departing headmaster suggested that the school focus on education quality.
这位即将离职的校长建议学校关注教学质量。
He departed his job December 16.
他于12月16日离职。
Lipton is planning to depart from the company he founded.
利普顿打算离开他创立的那家公司。
Why is it in this country that we have departed from good educational sense?
为什么在这个国家我们背离了教育上明智的选择？
It takes a brave cook to depart radically from the traditional Christmas menu.
一个厨师要彻底颠覆传统的圣诞节菜肴是需要很大勇气的。
He completely departed from the text and extemporized in a very energetic fashion.
他完全脱稿，慷慨激昂地进行即席演说。
2.clear off phr. v. [英，非正式] 迅速离开
多用于口语中。
The thief cleared off when he saw the cops coming.
小偷看见警察过来便马上溜走了。
He cleared off when he heard the police siren.
他听到警笛便逃之夭夭。
The boys told me to clear off.
那些男孩让我滚开。
3.decamp v. [正式] 逃走
指（偷偷地）迅速逃跑(或突然地离开)，常与介词 to/from 连用。
The enemy decamped to another village nearby.
敌人逃到附近的另一个村子去了。
The wealthier residents decamped from downtown.
富裕的居民从市中心逃走了。
He decamped from the hotel with someone else's luggage.
他携带别人的行李从旅馆里匆忙逃出。
That accountant decamped with all the money.
那名会计把所有的钱卷走逃跑了。
We all decamped to the pub.
我们全都溜到酒馆里去了。
4.leave离开（某人或某处）；最普通用语
更通用地描述离开，包括正式的和非正式的离开，也可以用于日常口语中。
The plane leaves for Dallas at 12.35.
飞机于12:35起飞前往达拉斯。
The plane leaves Heathrow at 12.35.
飞机于12:35在希思罗机场起飞。
She will leave for Paris tomorrow.
她明天会动身去巴黎。
The kids will be leaving home in no time.
孩子们很快就要离开家了。
Many people leave the land to find work in towns and cities.
许多人离开农村到城镇里找工作。
I have to leave work early today.
我今天得早点儿下班。
She left work early to meet her husband.
她提前下班去接她丈夫。
The children are completely out of control since their father left.
这些孩子自他们的父亲离开后就无法无天了。
She's leaving him for another man.
她要抛弃他去跟另一个男人。
Britain is being left behind in the race for new markets.
英国在开拓新市场方面正被甩在后面。
She knew that she had left childhood behind.
她知道童年已一去不复返了。
She left her children behind with a heavy heart.
她十分难过地丢下了她的孩子们。
He left off playing the piano to answer the door.
他停止弹钢琴，应门去了。
He left school with no qualifications.
他没有获得任何学历证书便离开了学校。
I left my bags in the car.
我把包落在车里了。
He would not be allowed to leave the country.
他可能会被禁止离开该国。
The new students were just left to sink or swim.
学校完全让新生自生自灭。
The new laws have left us little room to manoeuvre.
新法律没给我们留下多少回旋的余地。
注意，go作“离开”目前所在或所住之地比leave还要普通：
He came back last night and went away early this morning.
他昨天夜里回来，今天一大早就走了。
They came at six and went at nine.
他们是六点钟来的，九点钟走的。
What time is your friend going tomorrow?
你的朋友明天什么时候走？
When does the train go?
火车什么时候开？