to end a phone call
挂电话 (gua dianhua)
"He suddenly rang off without saying goodbye."
"他突然挂断电话，没说再见。" (Ta turan guaduan dianhua, mei shuo zaijian.)
to use or reduce a supply of something
to laugh uncontrollably at something
to talk too much and for a long time
to understand new concepts or ideas fast
to summarize or express something briefly
to stop being friendly after an argument
