a friend you have known for a long time
你认识很久的朋友 (ni renshi hen jiu de pengyou)
"I met an old friend from college yesterday."
"我昨天遇到了一个大学的老朋友。" (wo zuotian yudao le yi ge daxue de lao pengyou)
to become known or revealed
to officially begin a meeting or discussion
to be responsible for a mistake or bad situation.
to take advantage of a trend or situation
thinking about something without giving it full attention
an outstanding work of art or achievement
