The sun melted the dark clouds.

Dark clouds folded the hills.

乌云笼罩着群山.

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Black clouds floated by in the sky.

乌云从天空中飘过.

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Look at those black clouds; there's going to be a storm.

瞧那些乌云, 眼看要有暴风雨了.

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Judging from those black clouds, we're in for a storm.

根据那些黑云来判断，我们一定会碰上一场暴风雨。

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The variation of K Ar ages of the biotite in granite reflects the rising and cooling history or the intrusive during the orogenic period.

造山期花岗岩黑云母K-Ar年龄的变化是岩体隆起，冷却史的反映。

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To fight heug-un, we need at leadt three of ud.

要战胜黑云，我们至少得有三个人。

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Melting Experiment of Biotite Gneiss-H_2O System at 0.1-0.2 GPa Pressures

黑云母片麻岩H2O系统在0.10.2GPa压力下的熔融实验

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Thick clouds darkened the sky before the rain fell.

在下雨之前，黑云使天空变得黑暗了。

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From northern skies a cloud approaches, aloft upon the winds of change.

乘着易迁之风，一团黑云自北方的天际压来。

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Dark clouds bearing down on the city threaten to overwhelm it.

黑云压城城欲摧。

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REE distribution in the first phase intrusive rock descends in an order of pyroxenite to biotite pyroxenite to apatite rock.

第一期侵入岩较其它期次侵入岩REE含量高，按辉石岩黑云母辉石岩磷灰石岩的顺序增加。

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Optics and micro-shape characters in the process of biotite transforming to chlorite

黑云母向绿泥石转化过程中微观形态及光性特征

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He that sends the clouds can as easily clear the skies.

祂能将黑云密布天空，祂也能很容易地使天气清朗。

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Look at the heavy clouds! It's going to rain.

看那黑云！天要下雨了。

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Look at those dark clouds! it's got to rain today.

你看这黑云，今天准得下雨。

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The results show significant differences in oxygen isotope composition between biotite gneiss and granitic gneiss.

结果表明，这两种片麻岩在氧同位素组成上存在显著差别：黑云母片麻岩与共生的榴辉岩δ18O值呈同步变化，全岩δ18O值从－4.7‰变化至＋10.3‰；

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Behind them black clouds piled one atop another against a blood-red sky.

在他们身后是血红天空上的一团相互堆叠着的黑云。

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Is but a cloud, and like a shady grove.

只是一块黑云，像一片浓郁的小树林。

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Biotite ( hornblende) two-feldspar gneiss and ( 5) Fault br.

黑云（角闪）二长片麻岩和（5）碎裂岩等。

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The nature of mineralogy, petrology and geochemistry also provides reliable information to prove that primitive tuffaceous sedimentary rock underwent "soaking effect" in a kind of brine and formed scapolite biotite rock.

矿物学、岩石学及地球化学特征也为其原凝灰质沉积岩经过热卤水浸泡效应（soaking effect）形成方柱黑云岩类的成因提供了可靠信息。

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