您要查找的是不是：
- Black clouds portend a storm. 乌云是暴风雨的前兆。
- Black clouds that portend a storm. 预示着风暴到来的乌云
- Black clouds portend a storm 乌云为暴风雨的前兆。
- Those black clouds presage a storm. 那乌云预示着暴风雨将要来临。
- The black clouds threaten a storm. 乌云预示暴风雨的来临。
- The black clouds and the lightning show that a storm is imminent. 乌云和闪电表明暴风雨即将来临。
- Threatening skies portend a storm. 诡异的天气预示有暴风雨来临。
- The black clouds and the lightning show the imminence of a storm. 乌云闪电预示着一场暴风雨的来临。
- After black clouds clear weather,after a storm come a calm. 乌云过后天晴，风暴过后平静。
- 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。
- Look at those black clouds; there is going to be a storm. 瞧那些乌云，眼看要有暴风雨了。
- Look at those black clouds, there is going to be a storm. 瞧那些乌云,暴风雨就要来了。
- Judging from those black clouds, we're in for a storm. 从那些乌云判断,我们势必碰上一场暴风雨。
- 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。
- After black clouds clear weather, after a storm comes a calm. 乌云过后天晴,风暴过后必平静。
- Look at those black clouds ; there is going to be a storm . 瞧那些乌云，眼看要有暴风雨了。
- After black clouds clear weather, after a storm come a calm. 乌云过后天晴;风暴过后平静。
- Black clouds betoken a storm. 乌云预示暴风雨即将来临。
- These black clouds forebode a violent storm. 这些乌云预示着狂风暴雨即将到来。
- Those black clouds look a bit ominous. 乌云压顶，来势不妙。
