darkens

v.

（使）变暗( darken的第三人称单数 )；再不要跨进我的门槛，再不许踏进我的家门；

1. The sky darkened as the storm approached.
   风雨欲来，天色黑暗。
2. Go! And never darken my door again!
   走吧! 下次不要再到我家来了！
3. This terrible event will darken the rest of our lives.
   这件可怕的事将使我们的余生充满阴影。
4. We darkened the room to show the film.
   我们把房间弄暗以放影片。

Unoprostone isopropyl ester darkens iris color in pigmented rabbits with sympathetic denervation.
On A New Acid, Found In Human Urine Which Darkens With Alkalies
Tinted windshield that darkens when exposed to bright sunlight
Plagioclase feldspars: activity-composition relations based upon Darken's quadratic formalism and Landau theory
Global and regional climate changes due to black carbon
4-Norleucine, 7-D-phenylalanine-alpha-melanocyte-stimulating hormone: a highly potent alpha-melanotropin with ultralong biological a...
Capillary Malformation–Arteriovenous Malformation, a New Clinical and Genetic Disorder Caused by RASA1 Mutations
Limb regeneration in fiddler crabs: species differences and effects of methylmercury.
Laccase 2 is the phenoloxidase gene required for beetle cuticle tanning
Induction of skin tanning by subcutaneous administration of a potent synthetic melanotropin.