to experience very high and very low emotional states in a short time
在短时间内经历非常高和非常低的情绪状态 (zai duan shijian nei jingli feichang gao he feichang di de qingxu zhuangtai)
"The week was a rollercoaster of emotions, with moments of joy and sadness."
"这一周是一个情绪过山车，充满了快乐和悲伤的时刻。" (zhe yi zhou shi yi ge qingxu guoshanche, chongman le kuaile he beishang de shike)
extremely intense and ruthless competition
to find hope or something positive in a bad situation
Something that is easy and without difficulty.
Used to strongly confirm agreement
an achievement to be proud of
to understand the full scope of a situation or problem
