We must sleep when it is dark.
当它是黑暗的时，我们必须睡觉。
天黑的时候，他很害怕。
When it is dark enough, you can see the stars.
只有夜色足够黑的时候，才能看得见星星满天。
I mean I had been in darkness before; however, even when it is dark I could at least see something.
自己以前也曾在黑暗中待过，可是那至少也能看到一些东西。
The moon is in the sky when it is dark, but the sun is in the sky in the daytime when nobody needs it.
月亮在天黑的时候挂在天空。可是太阳是在白天谁也不需要它的时候出现在天空。
The cells also naturally store thermal energy so the device the cells are powering can work when it is dark as well.
细胞商店自然也热能源，使该装置的电池供电工作时，可以是黑暗的。
Genesis 16 is an illustration of listening to good advice when it is dark instead of waiting for God to send the light.
创世记16章的例子是在黑暗中听人的建议，而没有等候神的光照。
I have seen the sea when it is stormy and wild, when it is quiet and serene, when it is dark and moody. And in all its moods, I see myself.
我见过汹涌澎湃的海，风平浪静的海，阴郁易怒的海，我在它的种种变化中看见了自己。
Since the brain produces the most melotonin in the middle of the night when it is dark, night- shift workers - whose bodies are saturated by artificial light - have abnormally low levels.
大脑在晚间会产生最多的抗黑变激素，而当黑夜加深，上夜班的工人在人造灯的照射下时，抗黑变激素的水平就会不同寻常的低。
When you write, you light a bonfire in the spirit world. It is dark there.
当你写作时，你点燃了一簇精神世界的篝火。那里很黑。
So there may be a great working in your life when it all seems dark and you cannot see or trace, but yet God is working.
照样也许你的生活，在你的黑暗中，虽然你看不见什么，可是神正在工作。
When that arrives, I am not at my best. It is cold and dark and I have had no tea.
到出发的时候我状况不佳，外面又冷又黑，还喝不上一口热茶，这是我用来对付坏心情的秘方。
When the universe was half the age it is today, dark matter formed loose networks of filaments stretching through space and time, like wisps of cotton wool.
当宇宙演化到离今天一半的时间的时候，暗物质形成一种松散的丝格状结构（状如棉絮中的细丝），遍布整个宇宙时空。
One of them told me this: "When you write, you light a bonfire in the spirit world. It is dark there.
其中一个人这样对我说：当你写的时候，你点燃了一簇精神世界的篝火。
On nights when there is no moon the track is almost terrifyingly dark, but tonight it was quite clear, though the moonlight was pale.
没有月光的晚上，这路上阴森森的，有些怕人。今晚却很好，虽然月光也还是淡淡的。
Your body is hardwired to wake up when light is bright and go to sleep when it gets dark.
身体的清醒度与光线息息相关，当天亮了我们会醒来，反之我们就会想睡觉。
When we get up it is dark and the first thing to do is to raise enough dough to send a cable to America.
待我们起来天色已黑，这时要做的头一件事便是凑足往美国打一份电报的钱。
When the oil slick is not in that part of the image, it may be imperceptible against the dark background of the ocean.
当浮油没有在图片部分区域里，可能是被黑色背景大海依着而难以察觉。
The moon is in the sky when it's dark, but the sun is in the sky in the daytime when nobody needs it.
月亮在天黑时挂在天空，但太阳是在白天谁也不需要它时挂在天空。
Serpentinite is a dark green mineral used in decoration and jewelry. In nature, it is formed when sea water infiltrates into Earth's upper mantle, at depths that can reach 200 km in subduction zones.
蛇纹石是一种用来珠宝装饰的深绿色矿物，它形成于俯冲带，当海水渗入到地球上地幔的环境中，形成深度可达200km。
In my humble opinion, Dependency Injection (used for providing services in general) is somewhat of a dark art and really requires some insight on how and when to use it properly.
在我看来，依赖注入(用于一般提供服务)是一个黑暗的艺术，真的需要一些了解何时以及如何正确使用它。
36therefore, if your whole body is full of light, and no part of it dark, it will be completely lighted, as when the light of a lamp shines on you.
若是你全身光明，毫无黑暗，就必全然光明，如同灯的明光照亮你。
We know what it is needed to move you toward your momentous times when the power of the dark is to quickly dissipate.
我们知晓需要什么来让你们朝着你们的黑暗的力量快速消散的重大时代前进。
Thee puppy was born, the hair is brown, but it will no longer be when I grew up brown, and turned to dark yellow.
小狗刚生下来的时候，毛是棕色的，可是它长大以后就不再是棕色的了，而变成了深黄色。
It is yet unknown when exactly Dooku abandoned himself to the dark side of the Force, though he had apparently experimented with forbidden lore in the past.
现在仍然不知道杜库到底是何时投入了原力黑暗面，但他显然在过去尝试过那些禁断的知识。
It is yet unknown when exactly Dooku abandoned himself to the dark side of the Force, though he had apparently experimented with forbidden lore in the past.
现在仍然不知道杜库到底是何时投入了原力黑暗面，但他显然在过去尝试过那些禁断的知识。
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