“成团”的拼音为：chéng tuán...

我把卷成团的袜子拾掇起来。I picked up the balled socks.咱们大家抱成团,人多势众嘛.Let's try to stay together as a group ; there's safety in numbers.他抓起那几张纸，在手里紧紧攥成团。He picked up the sheets of paper, and balled them tightly in his fists....

“成团”的英语可以翻译为：clustering，conglobation ...