One's demeanor is upright.是什么意思？

One's demeanor is upright.

仪容 端庄

demeanor

n. <正>行为，举止，态度；

例句
A man's demeanor is high and elegant.
器宇高雅.

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

upright

adj. 直立的，垂直的，正直的，诚实的；adv. 垂直[竖立]地；n. （支撑用的）直柱，立放构件；

例句
When I pushed his door open, Trevor was sitting bolt upright in bed.
当我推开特雷弗的房门时，他正腰杆笔直地坐在床上。