to complete missing parts of understanding or knowledge
完成理解或知识中缺失的部分 (wánchéng lǐjiě huò zhīshi zhōng quēshī de bùfen)
"Teachers help students fill in gaps in their learning."
"老师帮助学生填补学习中的空白。" (Lǎoshī bāngzhù xuéshēng **tiánbǔ xuéxí zhōng de kòngbái**.)
to appear or arrive at an event
to create a strong basis for future development
to compare prices or products before buying
to leave short messages in a shared space
to fall in love with someone; to be strongly attracted to so...
to let fresh air into a place to remove bad smells