您要查找的是不是：
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- The mass rally was a total fiasco. 那次群众集会彻底失败。
- Let's collect the sap before its consolidation into a hard mass. 让我们在树液坚固成团之前将之收集起来。
- We should use anthracite to avoid air pollution. 我们应该使用无烟煤以防止空气污染。
- Pollution control has cleared the air. 污染管制已净化了空气。
- After harvest we will have a mass of rice. 秋收后，我们将获得大量稻谷。
- She says she doesn't like children in the mass. 她说从总体上讲她不喜欢孩子。
- Man is fighting a battle against pollution. 人类正在与污染作斗争。
- Pollution is still very much a live issue. 污染现象仍然是当前的大问题。
- The soil becomes more and more acidic as pollution mounts up. 随着污染的加剧，土壤的酸化越来越严重。
- Soon the car will go into mass production. 这种小汽车不久即可投入批量生产。
- A clamor in the press for pollution control. 在报纸上对污染控制的呼吁
- I found a mass of spawn in the fish before cooking. 烧鱼前，我发现鱼里有很多鱼籽。
- Water pollution imperils all kinds of marine life. 水质污染危及所有海洋生物。
- The mass of workers do not want this strike. 大多数工人不愿举行这次罢工。
- Pollution has stripped the trees of their foliage. 污染剥光了这些树的叶子。
- We have freed the lake from pollution. 我们已经清除了该湖的污染。
- A swelling or small palpable mass. 肿胀肿块或小的可摸到的块
- A metric unit of mass equal to 100 grams. 百克公制质量单位，等于100克。
- Mass media is very important for advertisements. 大众媒介对广告来说很重要。
