Because of crowdedness, we had to stand outside the classroom.
因为拥挤，我们不得不站在教室外。
2
Concerned Americans are trying to solve the problems of noise, dirt, crime, crowdedness, and pollution in the big cities.
心怀忧虑的美国人正试图解决大城市的噪音、肮脏、犯罪、拥挤和污染问题。
3
To tell the truth, to the old man getting off at this station, I always feel a bit unusual, and different in today, carriage until they leave away, crowdedness further that change, expand happily.