to fall behind others in progress or development
在进步或发展上落后于他人 (zai jinbu huo fazhan shang luohou yu taren)
"She started to drop behind in her studies after missing several classes."
"在错过几节课后，她开始在学习上落后。" (zai cuo guo ji jie ke hou, ta kaishi zai xuexi shang luohou)
to compete in an election for a political position
to phone someone
to establish a rule or law; to state officially
to demand reforms or modifications in policy or system
to cause something bad to happen; to make something start
to keep emotions hidden instead of expressing them
