Only if a teacher has given permission is a student allowed to leave the room.

学生只有得到老师的许可才能离开教室。

《牛津词典》

The government has declared the French ambassador persona non grata and ordered him to leave the country.

该政府已经宣布法国大使为不受欢迎的人，勒令其离境。

《柯林斯英汉双解大词典》

Even President Obama's mother-in-law has agreed to leave Chicago and into the White House to help care for her granddaughters.

甚至连奥巴马总统的岳母也同意离开芝加哥，进入白宫，帮助照顾她的外孙女们。

youdao

In the song,a man named Charlie has to ride forever because he does not have enough money to leave the train.

VOA: special.2010.01.25

And she has to catch a flight, and you know the flight is going to leave in three hours and she's taking her time.

她马上得去赶飞机，你知道飞机在三个小时后就要起飞了。可她还在磨磨蹭蹭。

Make sure 课堂 - SpeakingMax英语口语达人

A website called Quitfacebook Day has been urging people to leave this Monday.

VOA: special.2010.05.28

Obviously it's disappointing for Ferris and the fact that he has to leave the Lions squad before a Test has even been played but it's a fantastic opportunity for Ryan.

BBC: Injured Ferris out of Lions tour

Sadly, David has to leave us to attend to his lovely new Bangkok restaurant, nahm (metropolitan.bangkok.como.bz).

BBC: Postcard from Bangkok

To judge by the rhetoric of the anti-tobacco campaign, America has taken leave of its senses over smoking.

ECONOMIST: Land of the smoke-free