辛勤xīn qín
hardworking, industrious辜负gū fù
to fail to live up (to expectations)辨认biàn rèn
to recognize, to identify辩护biàn hù
to speak in defense of辩解biàn jiě
to explain, to justify辩证biàn zhèng
investigate, dialectical辫子biàn zi
plait, braid, pigtail边境biān jìng
frontier, border边界biān jiè
boundary, border边疆biān jiāng
border area, borderland, frontier