The Darkening黑暗之门
surface darkening切口表面褐度;表面褐变;表面变暗
room darkening士眩晕;断电
darkening cream乌发乳
darkening water变黑的水
darkening teeth染色牙
aftercooking darkening煮后变黑
darkening finishing增浓整理
limb darkening周边减光;临边减光;暗现象
threshold glass darkening femtosecond laser
阈值玻璃暗化飞秒激光。
参考来源 - 飞秒激光作用下光学与激光玻璃的暗化阈值测量 Thresholds of Femtosecond Laser Induced Darkening in Optical and Laser GlassesV-T/V-I（及物动词/不及物动词） If something darkens or if a person or thing darkens it, it becomes darker. 变暗; 使变暗
The sky darkened abruptly.
天突然变暗了。
V-T/V-I（及物动词/不及物动词） If someone's mood darkens or if something darkens their mood, they suddenly become unhappy. 黯淡; 使黯淡 [文学性]
My sunny mood suddenly darkened.
我快乐的情绪突然黯淡下来。