DOCTOR: Yes, because it’s completely dark for four months of the year (pause)...
n. the dark：黑暗
I'm afraid of the dark.
Her mother was sitting in the dark by the stove in her rocking chair.
n. a shot in the dark;a stab in the dark：瞎猜；瞎碰；随便试试
Every single one of those inspired guesses had been shots in the dark.
I am as much in the dark as you.
The police are completely in the dark about the killing.
I managed to keep my parents in the dark about this.
They avoid going out alone after dark.
They'll be back well before dark.
Troy's chatter kept me from thinking dark thoughts.
a dark scowl
a dark period in our history
a dark green sweater
She was wearing a dark blue dress.
She's very dark.
The driver was very dark, Maltese perhaps.
Keep it dark.
The spacecraft is set to throw new light on to a dark corner of the solar system.
I got a dark look from William.
Garin shot him a dark glance, as if in warning.
Dark rumours of conspiracies and assassinations
Once again there's talk of very dark days ahead.
This was the darkest period of the war.
a dark street
It was too dark to walk home.
It was too dark inside to see much.
It's dark outside.
When she awoke it was already dark.
It's getting dark.
They drew the curtains once it got dark.
He wore a dark suit and carried a black attaché case.
The heavy dark table is inlaid with lighter wood.
He had dark brown hair, dark skin, and dark eyes.
She's got dark hair.
Their dark humour never failed to astound him.
Nina took a dark pleasure in being the focus of the tension between her father and her brother.
adj. to go dark：进入休眠（公司退出主要交易所，但继续进行交易）