But why, then, are their voices like the voices of boys calling to each other as they explore a dark unknown cave, growing ever louder and louder, bolder and bolder?

然而，为何，他们的声音就像那些探索未知黑暗洞穴的男孩们呼喊对方名字时那样越来越大，越来越明显？

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A decade later, a new suite of experiments may pin down the properties of dark energy and solve what some experts are calling "the most profound problem" in modern physics.

十年后，一组新的试验有可能帮助搞清楚暗能量的特性，相应地，一些专家号称的现代物理学中“最深奥”的问题也将迎刃而解。

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We could hear the cicadas and the crickets and the tree frogs and the night birds calling out, all the breathing creatures looking for something in the dark.

我们可以听到知了，蟋蟀，树蛙以及夜出活动的鸟正在鸣唱。所有活的生物都在黑暗中找寻着什么。

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Chanel's father, Garvin Nixon, insists that his daughter would not stay out after dark without calling home.

CNN: Strangled teen left on Brooklyn curb with trash

And the people of our city stood in the dark each night, waving flags, and calling out, "God bless you, " as the trucks hurtled by.

CNN: Pataki: 'Bush says what he means, he means what he says'

Just as Britain's affable Tony Blair took care to keep a foul-mouthed master of dark arts, Alastair Campbell, at his side, so is it the calling of Mr Emanuel to bludgeon underlings at the White House and former colleagues in Congress into obeying his master's commandments.

ECONOMIST: White House tensions