bolt upright 笔笔直直
- It annoys me if a lamppost is not bolt upright.
如果灯杆不是笔直的,我就感到烦恼。 - Any person waking from a nightmare will sit bolt upright and pant.
任何人从噩梦警醒时会突然坐起来喘气.
Bolt \Bolt\, adv.
In the manner of a bolt; suddenly; straight; unbendingly.
[He] came bolt up against the heavy dragoon.
--Thackeray.
{Bolt upright}.
(a) Perfectly upright; perpendicular; straight up;
unbendingly erect. --Addison.
(b) On the back at full length. [Obs.] --Chaucer.