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- Clouds are building up over the sea. 云正在海面上聚集。
- The clouds are building up. 云在聚集。
- The clouds are fleeting before wind. 云在风前飞驰而过。
- They are building up their presence in the area. 他们逐步扩大在该地区的影响力。
- The clouds are gathering,it will probably rain. 乌云在集结，天可能要下雨。
- The clouds are banking up from the south. 云正从南面聚积起来。
- The building must have been built up by now. 那幢大楼此时一定已经建成。
- The clouds are driving southwards. 云猛向南移
- The clouds are gathering , it is going to rain . 云在集结，天要下雨了。
- The clouds are hanging low today. 今天云层很低。
- The clouds are lying over the hills. 云层笼罩在群山顶上。
- The village has been built up since I lived here. 我在这里住过，从那时起，这个村子已经盖满了房子。
- The clouds are pale and a light breeze is blowing. 云淡风轻。
- My savings are building up nicely. 我的存款正不断增加。
- The air is cleaner,the clouds are more whiter. 这里的空气很清新，这里的云很白很白。
- We are building up a good business. 我们的生意兴隆。
- They are building up their military forces. 他们在集结他们的军队。
- They are building up their military forces . 他们在集结他们的军队。
- The clouds were then dispersing across the sky. 此时空中的乌云渐渐消散。
- Enemy forces are building up in that area. 敌人正在那个地区集结兵力。
