to have a very bad memory
记忆力非常差 (jiyili feichang cha)
"He forgets everything; he has a mind like a sieve."
"他什么都忘了；他的记忆力像筛子一样。" (ta shenme dou wang le; ta de jiyili xiang shaizi yiyang)
to look after someone and help them develop
to show kindness and affection to others
to reduce the level or amount of something
a surprise test given without warning
a state of mental and emotional calmness
to make someone feel sad or to reduce something
