Is this grammatically correct? What does it mean? Any possible rephrasing? They are so good at crossing boundaries

Yes, the sentence "They are so good at crossing boundaries" is grammatically correct. The meaning of the sentence suggests that "they" (whoever is being referred to) excel in going beyond established limits or norms, whether those are social, artistic, personal, or in other contexts. It can imply a sense of skill in navigating different areas or breaking down barriers. Possible rephrasing could include: 1. "They excel at breaking boundaries." 2. "They have a talent for crossing limits." 3. "They are skilled at pushing boundaries." 4. "They are very adept at navigating limits." Each rephrasing maintains the original meaning while varying the wording.