人們到底為什么總敞著門(mén)呢？

　　Why oh why do people keep leaving the door open?

　　他們到底認(rèn)為自己在做什么？

　　What in the world did they think they were doing?

　　你只好硬著頭皮撐到底了。

　　You're just going to have to tough it out.

　　我保證我會(huì)堅(jiān)持到底。

　　I promise I am in this for the long haul.

　　警方正設(shè)法查清到底發(fā)生了什么。

　　The police are trying to ascertain what really happened.

　　他們到底出了什么事，到現(xiàn)在仍可以說(shuō)是個(gè)謎。

　　What happened to them remains somewhat of a mystery.

　　極少受訓(xùn)者堅(jiān)持到底了。

　　Very few of the trainees have stayed the course.

　　請(qǐng)?jiān)�諒我的無(wú)知，這家公司到底是干什么的？

　　Forgive my ignorance, but what exactly does the company do?

　　你到底上哪兒去了？

　　Where in the name of Heaven have you been?