People in charge of managing projects are subject to constraints that keep them somewhat in the dark.

负责管理项目的人只知去做，而不知为何去做。

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Just as there is a positive charge for every negative charge, there is a light side to every dark side.

正如每个负电荷都有其对应的正电荷一样，每个黑暗面都有其对应的光明面。

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Dark pools charge trading fees, while light pools work mostly in clearing.

黑池收取交易费，而白池主要负责清算。

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With Scott in charge, the Dark Blues won this season's Challenge Cup and lost only four league games, but last week they exited the Scottish Cup at the hands of quarter-final opponents Raith Rovers.

BBC: First Division leaders Dundee sack manager Jocky Scott

Bring packaged snacks, wet wipes, Ziploc bags, a change of clothes, disposable rain ponchos, sunscreen, bug repellent, water bottles, a small first-aid kit, small toys, coloring books and glow-in-the-dark sticks and necklaces (which the parks sell at dusk but they charge a fortune).

CNN: A theme park survival guide

By examining the resulting charge and light produced in this collision, scientists can determine whether dark matter was involved.

CNN: How particle smasher and telescopes relate