Ralph's face was dark with breathlessness.是什么意思？

Ralph's face was dark with breathlessness.

拉尔夫的脸由于接不上气而灰暗无光.

face

n. 面容，表面，脸，方面；vt.& vi. 面对，面向…，正视，承认；vt. （感到不能）对付，（明知不好办而）交谈，必须对付（某情况），面临…；

例句
Graham hit him across the face with the gun.
格雷厄姆用枪击打他的脸部。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

dark

adj. 黑暗的，乌黑的，忧郁的，神秘的；n. 黑暗，暗色，暗处；

例句
In the dark my sense of hearing becomes so acute.
黑暗中我的听觉变得异常灵敏。

with

prep. 和，跟，随着，关于，和…一致；

例句
A waiter entered with a tray...
侍者端着托盘进来了。

breathlessness

气绝；

例句
There had been no indication of either breathlessness or any loss of mental faculties right until his death.
他去世前并未出现呼吸困难或意识不清的迹象。