adv.垂直地
The human brain is divided vertically down the middle into two hemispheres. 人腦從中央垂直地分為兩半球。
Plane "hovers" vertically in place, rotating left around its roll axis. 飛機垂直地懸浮在空中，并向左繞其滾軸旋轉(zhuǎn)。
