Two astronauts spent 6 and a half hours unhooking a girder from the International Space Station.

两名宇航员花了六个半小时的时间从国际空间站上卸下一个横梁。

Two astronauts spent six and a half hours unhooking a girder from the international space station.

两名宇航员共花六个半小时将一根大梁从国际太空站上取下。

Two astronauts spent six and a half hours unhooking a girder from the International Space Station.

两名宇航员花了六个半小时解开国际空间站上地钢架。

Who has been unhooking the stars without my permission, and putting them on the table in the guise of candles?

是谁，没有得到我的许可，便把天上的星星摘了下来，放在桌上冒充蜡烛？

It means unhooking yourself from all the electronic tethers to which you have been accustomed and obliged. It means guarding your private time jealously.

这就是说，必须要远离所有那些工作中须臾不可分离的电子联系设备，并绝对保证自己的私人时间。