Luna 16 landed on the lunar surface (in total darkness, no less), collected moon rocks, packed them up, and returned them to Earth.

“月球16号”降落在月球表面(完全是在黑暗中)，收集了月球岩石，打包，然后带回地球。

youdao

The room was in total darkness.

房间里一片漆黑。

《牛津词典》

At that instant the museum was plunged into total darkness.

在那一刻，博物馆陷入一片黑暗。

《柯林斯英汉双解大词典》

There was an instant of extreme cold and total darkness.

VOA: special.2010.07.10

And on a full charge it can work for up to three months in total darkness.

ENGADGET: Logitech's Wireless Solar Keyboard K750 for Mac brings Appletastic keys, pastel hues

The researchers said this did not happen when the pregnancy was spent in total darkness.

BBC: Light in womb 'gives healthy eyes' - in mice

The start of the second-half was delayed by five minutes after a power cut plunged the ground into total darkness.

BBC: Hartlepool 0-0 York