But to mark the tests, they have to use an answer key sent down from the States.

不过为了给测试判分，他们使用的是从美国发来的答案。

youdao

At the moment, the message lasts for about eight hours before vanishing but Dr Geambasu suggests that this duration could be extended or diminished by adjusting the number of pieces of key sent out.

目前，信息可以保持大约八个小时不消失。但是基倍苏女士表示，调节发送碎片的数量可以延长或缩短信息保持完整的时间。

youdao

At the moment， the message lasts for about eight hours before vanishing but Dr Geambasu suggests that this duration could be extended or diminished by adjusting the number of pieces of key sent out.

不过靳芭苏博士表示，可以通过增减发送密钥片段的数量来调整销毁信息的时间长短。

youdao

President Pervez Musharraf, who counted the general as a key ally, sent a personal message to the surviving families and "prayed for the eternal peace of departed souls and for courage to the grieved families, " according to the state media.

CNN: Pakistani army 'copter crash kills 8

This week, in the last days of his presidency, Mr Clinton sent key adviser Jim Steinberg to Northern Ireland to assist in the intensive negotiations held to try to agree a resolution on issues threatening the future of the province's powersharing arrangement.

BBC: Trimble welcomes Bush Presidency

That policy paper was sent to key congressional committees last year but became public just this week.

CNN: Obama to release document on targeted killings to Congress