在南北战争发生之前，如果你是黑色人种，且生下来就是自由人，你仍然可能被迫成为奴隶。
Before the Civil War, if you were black and born a free man, you could still be forced into slavery.
她不用素描就能自由地创作，将物体粘在一起并钉牢，将它们涂成黑色，或更罕见地涂成白色或金色，然后将它们放在盒子中。
Creating very freely with no sketches, she glues and nails objects together, paints them black, or more rarely white or gold, and places them in boxes.
具有自由边的最好，黑色色素沉着。
拖尾婚纱搭配黑色帆布鞋十分可爱，婚照中自由自在的新娘与新郎躺在操场上脸上洋溢着开心的笑容。
The trailing nuptial dress with black canvas shoes is very cute, the bride and groom in the wedding take one's ease lying on the playground on the face is brimming with the happy smile.
近日一段视频拍到“弗德里克大帝”自由奔跑，黑色的长鬃毛在风中飘扬。
A breathtaking video shot recently shows Frederik galloping freely, with his long black mane billowing in the wind.
淡淡的月光下，自由女神像黑色的轮廓映在静静的水面上。
On the quiet waters is cast a dark outline of the Statue of Liberty under the pale moonlight.
研究发现，蝌蚪黑色素能有效清除激发态自由基。对肝脂质过氧化有明显抑制作用。
The results showed that black pigment of frog tadpole can effectively cleaned up the free radical in rat liver tissue, and inhibited lipid peroxidation.
命运予张海迪已足够残酷，仅给她留下一个健全的大脑，所幸这黑色的幽默还没开的彻底，让她保有自由的思想与乐观的情怀。
To her the fate is too cruel to left her only a sound brain and fortunately she has her own free thoughts and optimistic attitude to life.
我喜欢冒险与刺激，喜欢黑色与紫色，我向往自由，最害怕的是失去勇气。
I like reading adventure and excitement, like black and purple, I like free fear most is lose courage.
使用自由变换工具(弯曲)来弯曲光线，使其在图像的左边缘更薄。使用渐变工具(黑色至透明)完成褪色效果。
Use the Free Transform Tool (with Warp) to bend the light so that it gets thinner towards the left edge of the image. Use the Gradient Tool (black to transparent) to fade the effect.
这一组细胞表达DCT蛋白，而这类蛋白也表达在皮肤的黑色素颗粒中和清除自由基的过程中。
This group of cells expresses the protein DCT, which is also involved in making the skin pigment melanin and in the detoxification of free radicals.
黑色素能够产生一个稳定的自由基信号，在所有的状况下都能够增强质子的弛豫。
Melanin produces a stable free radical signal under all known conditions which enhances proton relaxation. The degree of shortening corresponds to the melanin content.
“你和煤炭工作者一起工作，在那里所有你学到的是黑色的肺部……你和自由职业者一起工作，你学会压抑”霍罗维茨说。
You work with coal miners and you learn everything there is about black lung... You work with freelancers, and you learn about depression, "Horowitz has said."
利用荧光光度分析法研究了黑色素对羟基自由基的清除活性。
The scavenging of melanin to hydroxyl free radicals was studied by fluorometry.
维C能深入肌肤细胞，淡化黑色素，清除氧自由基，使肌肤迅速增白。
Vitamin C can enter deep into skin cells to dilute the melanin, remove oxygen-derived free radicals, and quickly whiten the skin.
维C能深入肌肤细胞，淡化黑色素，清除氧自由基，使肌肤迅速增白。
Vitamin C can enter deep into skin cells to dilute the melanin, remove oxygen-derived free radicals, and quickly whiten the skin.
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